SARS-CoV-2 Omicron variant

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SARS-CoV-2 Omicron variant


This article needs more medical references for verification or relies too heavily on primary sources. (December 2021)



The Omicron variant is a variant of SARS-CoV-2, the virus that causes COVID-19. As of December 2021, it is the newest variant. It was first reported to the World Health Organization (WHO) from South Africa on 24 November 2021.[1] On 26 November 2021, the WHO designated it as a variant of concern and named it "Omicron", the fifteenth letter in the Greek alphabet.[2][3]

Omicron variant and other major or previous variants of concern of SARS-CoV-2 depicted in a tree scaled radially by genetic distance, derived from Nextstrain on 1 December 2021

The variant has an unusually large number of mutations, several of which are novel[4][5] (see § Mutations) and a significant number of which affect the spike protein targeted by most COVID-19 vaccines at the time of discovering the Omicron variant. This level of variation has led to concerns regarding its transmissibility, immune system evasion, and vaccine resistance, despite initial reports indicating that the variant causes less serious disease than previous strains. The variant was quickly designated as being "of concern", and travel restrictions were introduced by several countries in an attempt to slow its international spread.

Compared to previous variants of concern, Omicron is believed to be far more contagious (spreading much quicker),[6] and spreads around 70 times faster than any previous variants in the bronchi (lung airways), but it is less able to penetrate deep lung tissue, and perhaps for this reason there is a considerable reduction in the risk of severe disease requiring hospitalisation for most people.[7] However the extremely high rate of spread, combined with its ability to evade both double vaccination and the body's immune system, means that the total number of patients requiring hospital care at any given time is still of great concern.[7]

The new variant was first detected on 22 November 2021 in laboratories in Botswana and South Africa based on samples collected 11–16 November;[8][9] the first known sample was collected in South Africa on 8 November.[10][11] In other continents, the first known cases were a person arriving in Hong Kong from South Africa via Qatar on 11 November and another person who arrived in Belgium from Egypt via Turkey on the same date.[12][13] As of 16 December 2021, the variant has been confirmed in more than 80 countries, and in all continents except Antarctica.[14] The World Health Organization estimates that by mid-December, Omicron likely was in most countries in the world, whether they had detected it or not.[15]


























Classification
Nomenclature

On 26 November, the WHO's Technical Advisory Group on SARS-CoV-2 Virus Evolution declared PANGO lineage B.1.1.529 a variant of concern and designated it with the Greek letter omicron.[1][2][3] Greek letters are used to identify variants of SARS-CoV-2. The WHO skipped the preceding letters nu and xi in the Greek alphabet to avoid confusion with the similarities of the English word "new" and the Chinese surname Xi.[2][3][16][17] The previous designation was for the "variant of interest" mu.[18][19][3]

Possibly due to a lack of familiarity with the Greek alphabet among some English speakers and the relative frequency of the Latin prefix "omni" in other common speech, the name of the variant has also occasionally been mispronounced and misspelled as "Omnicron".[20]

The GISAID project has assigned it the clade identifier GR/484A,[21] and the Nextstrain project has assigned it the clade identifier 21K.[22]
Mutations



Genomic sequence
Defining mutations in the
SARS-CoV-2 Omicron variant
GeneAmino acid
ORF1ab nsp3: K38R
nsp3: V1069I
nsp3: Δ1265
nsp3: L1266I
nsp3: A1892T
nsp4: T492I
nsp5: P132H
nsp6: Δ105-107
nsp6: A189V
nsp12: P323L
nsp14: I42V
Spike A67V
Δ69-70
T95I
G142D,
Δ143-145
Δ211
L212I
ins214EPE
G339D
S371L
S373P
S375F
K417N
N440K
G446S
S477N
T478K
E484A
Q493R
G496S
Q498R
N501Y
Y505H
T547K
D614G
H655Y
N679K
P681H
N764K
D796Y
N856K
Q954H
N969K
L981F
E T9I
M D3G
Q19E
A63T
N P13L
Δ31-33
R203K
G204R
Sources: UK Health Security Agency[23] CoVariants[22]


The variant has many mutations, some of which have concerned scientists.[24] The Omicron variant has a total of 60 mutations compared to the original Wuhan variant: 50 nonsynonymous mutations, 8 synonymous mutations, and 2 non-coding mutations.[5] Thirty-two mutations affect the spike protein, the main antigenic target of antibodies generated by infections and of many vaccines widely administered. Many of those mutations had not been observed in other strains.[25][26] The variant is characterised by 30 amino acid changes, three small deletions, and one small insertion in the spike protein compared with the original virus, of which 15 are located in the receptor-binding domain (residues 319–541). It also carries a number of changes and deletions in other genomic regions. Additionally, the variant has three mutations at the furin cleavage site.[27] The furin cleavage site increases SARS-CoV-2 infectivity.[28] The mutations by genomic region are the following:[29][30]


Illustration of the locations of the Omicron mutations in the spike protein, top view (left) and side view (right), showing amino acid substitutions (yellow), deletions (red), and insertions (green). In this trimeric structure, two monomers (gray and light blue) have their receptor-binding domains in the "down" conformation while one (dark blue) is in the "up" or "open" conformation. Mutation data from WHO,[1] structure from PDB: 6VYB​.[31]
Spike protein: A67V, Δ69-70, T95I, G142D, Δ143-145, Δ211, L212I, ins214EPE, G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H, T547K, D614G, H655Y, N679K, P681H, N764K, D796Y, N856K, Q954H, N969K, L981F
Half (15) of these 30 changes are located in the receptor binding domain-RBD (residues 319–541)
ORF1ab
nsp3: K38R, V1069I, Δ1265, L1266I, A1892T
nsp4: T492I
nsp5: P132H
nsp6: Δ105-107, A189V
nsp12: P323L
nsp14: I42V
Envelope protein: T9I
Membrane protein: D3G, Q19E, A63T
Nucleocapsid protein: P13L, Δ31-33, R203K, G204R

A link with HIV infection may explain a large number of mutations in the sequence of the Omicron variant.[32][citation needed] Indeed, in order to be affected by such a high number of mutations, the virus must have been able to evolve a long time without killing its host, nor being eliminated. One such situation occurs in people with a weakened immune system but receiving enough medical care to survive.[33] This is the case in HIV patients in South Africa, who represent more than 20% of the population.[34] Due to lack of access to clinics, fear of stigmatisation and disrupted healthcare, millions living with HIV in the region are not on effective HIV therapy. HIV prevention could be key to reducing the risk that uncontrolled HIV is driving the emergence of Covid variants.[35]

In addition, it is believed that one of these many mutations, comprising a 9-nucleotide sequence, may have been acquired from another type of virus (known as HCoV-229E), responsible for the common cold.[36] This is not entirely unexpected - at times, viruses within the body acquire and swap segments of genetic material from each other, and this is one common means of mutation.[36]
Sublineages and stealth variant

Researchers have established the existence of three sublineages of Omicron. The 'standard' sublineage is now referred to as BA.1​/B.1.1.529.1, and the two other sublineages are known as BA.2​/B.1.1.529.2 and BA.3​/B.1.1.529.3.[37]

All three can be detected by full sequencing, but BA.2 has been nicknamed 'Stealth Omicron' because it differs from the 'standard' variety by not having the characteristic S gene target failure (SGTF)-causing deletion (Δ69-70) by which many PCR tests are able to detect a case as an Omicron, or Alpha, variant. Thus, countries that primarily rely on SGTF for detection may overlook BA.2.[38] Some countries, including Denmark, use a variant qPCR that tests for several mutations, including Δ69-70, E484K, L452R and N501Y.[39] It can also distinguish Delta (the heavily dominant variant worldwide, prior to the spread of Omicron), which has L452R but not N501Y,[40] and all Omicron sublineages, which have N501Y but not L452R.[41][42] As of 19 December 2021, BA.2 appears to be very rare with about twenty known cases from half a dozen countries.[37][42] The third sublineage, BA.3, is also very rare and it does not represent the same potential problem in detection since it has the SGTF deletion (Δ69-70), similar to BA.1.[37][43]
Possible consequences

The WHO is concerned that a large number of mutations may reduce immunity in people who were previously infected and in vaccinated people. It is also possible the omicron variant might be more infective in this regard than prior variants. The effects of the mutations, if any, are unknown as of late November 2021. The WHO warns that health services could be overwhelmed especially in nations with low vaccination rates where mortality and morbidity rates are likely to be much higher, and urges all nations to increase COVID-19 vaccinations.[44]

Professor Paul Morgan, immunologist at Cardiff University, also recommends vaccination. Morgan said, "I think a blunting rather than a complete loss [of immunity] is the most likely outcome. The virus can't possibly lose every single epitope on its surface, because if it did that spike protein couldn't work any more. So, while some of the antibodies and T cell clones made against earlier versions of the virus, or against the vaccines may not be effective, there will be others, which will remain effective. (...) If half, or two-thirds, or whatever it is, of the immune response is not going to be effective, and you're left with the residual half, then the more boosted that is the better."[45]

Professor Francois Balloux of the Genetics Institute at University College London said, "From what we have learned so far, we can be fairly confident that – compared with other variants – Omicron tends to be better able to reinfect people who have been previously infected and received some protection against COVID-19. That is pretty clear and was anticipated from the mutational changes we have pinpointed in its protein structure. These make it more difficult for antibodies to neutralise the virus."[46]

On 15 December, the European Centre for Disease Prevention and Control assessed that, even if the variant turns out to be milder than Delta, its spread will very likely increase hospitalizations and fatalities due the exponential growth in cases caused by increased transmissibility.[47]
Signs and symptoms
Main article: Symptoms of COVID-19

As of 28 November 2021 the World Health Organization's update states "There is currently no information to suggest that symptoms associated with Omicron are different from ... other variants".[48]

A study performed between the first of December to the 7th of December by the Center for Disease Control found that "The most commonly reported symptoms [were] cough, fatigue, and congestion or runny nose".[49]

Research published in London on 25 December 2021 suggested, the most frequent symptoms stated by users of the Zoe Covid app were "a running nose, headaches, fatigue, sneezing and sore throats."[50]
Characteristics

Many of the mutations to the spike protein are present in other variants of concern and are related to increased infectivity and antibody evasion. Computational modeling suggests that the variant may also escape cell-mediated immunity.[26] On 26 November, the ECDC wrote that an evaluation of the neutralizing capacity of convalescent sera and of vaccines is urgently needed to assess possible immune escape, saying these data are expected within two to three weeks.[30]
Contagiousness

It was not known in November 2021 how the variant would spread in populations with high levels of immunity. It was also not known if the omicron variant causes a milder or more severe COVID-19 infection. According to pharmaceutical companies, vaccines could be updated to combat the variant "in around 100 days" if necessary.[51]

Relating to naturally acquired immunity, Anne von Gottberg, an expert at the National Institute for Communicable Diseases, believed at the beginning of December 2021 that immunity granted by previous variants would not protect against Omicron.[52]

On 15 December 2021 Jenny Harries, head of the UK Health Security Agency, told a parliamentary committee that the doubling time of COVID-19 in most regions of the UK was now less than two days, despite the majority of the population being vaccinated. She said that the Omicron variant of COVID-19 is "probably the most significant threat since the start of the pandemic", and that the number of cases in the next few days would be "quite staggering compared to the rate of growth that we've seen in cases for previous variants".[53]
Virulence

As of 28 November 2021 the World Health Organization's update states "There is currently no information to suggest that symptoms associated with Omicron are different from ... other variants". Increased rates of hospitalization in South Africa may be due to a higher number of cases, rather than any specific feature of the Omicron variant.[48]

On 4 December 2021, the South African Medical Research Council reported that from 14 to 29 November 2021 at a hospital complex in Tshwane, inpatients were younger than in previous waves and the ICU and oxygen therapy rates were lower than in earlier waves. These observations are not definitive and the clinical profile could change over the following two weeks, allowing for more accurate conclusions about disease severity.[54] Excess deaths nearly doubled in the week of 28 November, suggesting under-reporting, but the level was still much lower than that seen in the second wave in mid-January 2021.[55] On 12 December, director-general of the World Health Organization Tedros Adhanom asserted that it was wrong for people to consider Omicron as mild. This is because high exposure to previous infections in South Africa likely affects the clinical course of the new infections.[56]

On 20 December, a report by the Imperial College COVID-19 Response Team based on data from England, found that hospitalisation and asymptomatic infection indicators were not significantly associated with Omicron infection, suggesting at most limited changes in severity compared with Delta.[57] On 22 December, the team reported an approximately 41% (95% CI, 37–45%) lower risk of a hospitalization requiring a stay of at least 1 night compared to the Delta variant, and that the data suggest that recipients of 2 doses of the Pfizer–BioNTech, the Moderna or the Oxford–AstraZeneca vaccine remain substantially protected from hospitalization.[58]
Diagnosis
See also: COVID-19 testing

The FDA has published guidelines on how PCR tests will be affected by Omicron.[59] Tests that detect multiple gene targets will continue to identify the testee as positive for COVID-19. S-gene dropout or target failure has been proposed as a shorthand way of differentiating Omicron from Delta.

The variant may be identified by sequencing and genotyping.[60] The BA.1 lineage, but not the BA.2 lineage, can be identified by S gene target failure (SGTF) of the TaqPath assay, a trait shared with subsets of SARS-CoV-2 Alpha variant.[38] Several other commercial assays can also be used, though they test for different amino acid substitutions.[a]
Prevention
See also: COVID-19 § Prevention

As with other variants, the WHO recommended that people continue to keep enclosed spaces well ventilated, avoid crowding and close contact, wear well-fitting masks, clean hands frequently, and get vaccinated.[1][61]

On 26 November 2021, BioNTech said it would know in two weeks whether the current vaccine is effective against the variant and that an updated vaccine could be shipped in 100 days if necessary. AstraZeneca, Moderna and Johnson & Johnson were also studying the variant's impact on the effectiveness of their vaccines.[62] On the same day, Novavax stated that it was developing an updated vaccine requiring two doses for the Omicron variant, which the company expected to be ready for testing and manufacturing within a few weeks.[63][64] On 29 November 2021, The Gamaleya Institute said that Sputnik Light should be effective against the variant, that it would begin adapting Sputnik V, and that a modified version could be ready for mass production in 45 days.[65] Sinovac said it could quickly mass-produce an inactivated vaccine against the variant and that it was monitoring studies and collecting samples of the variant to determine if a new vaccine is needed.[66] On 7 December 2021, at a symposium in Brazil with its partner Instituto Butantan, Sinovac said it would update its vaccine to the new variant and make it available in three months.[67] On December 2, the Finlay Institute was already developing a version of Soberana Plus against the variant.[68]

On 29 November 2021, the WHO said cases and infections are expected among those vaccinated, albeit in a small and predictable proportion.[69]

On 7 December 2021, preliminary results from a laboratory test conducted at the Africa Health Research Institute in Durban with 12 people who received the Pfizer-BioNTech vaccine found a 41-fold reduction in neutralizing antibody activity against the variant in some of the samples. This is a big reduction, but it does not mean that the variant can escape vaccines completely, so vaccination with current vaccines is still recommended. Neutralizing antibody activity against the variant was greater in those fully vaccinated after being infected about a year earlier. Effectiveness estimates will likely change as more data is collected, as antibodies generated by vaccination vary widely between individuals and the sample was small.[70][71][72] On 8 December 2021, Pfizer and BioNTech reported that preliminary data indicated that a third dose of the vaccine would provide a similar level of neutralizing antibodies against the variant as seen against other variants after two doses.[73]

On 10 December 2021, the UK Health Security Agency reported that early data indicated a 20- to 40-fold reduction in neutralizing activity for Omicron by sera from Pfizer 2-dose vaccinees relative to earlier strains and a 20-fold reduction relative to Delta. The reduction was greater in sera from AstraZeneca 2-dose vaccinees, falling below the detectable threshold. An mRNA booster dose produced a similar increase in neutralising activity regardless of the vaccine used for primary vaccination. After a booster dose (usually with an mRNA vaccine),[74] vaccine effectiveness against symptomatic disease was at 70%–75%, and the effectiveness against severe disease was expected to be higher.[75]

On 26 November 2021 the WHO asked nations to do the following:
Enhance surveillance and sequencing efforts to better understand circulating SARS-CoV-2 variants.
Submit complete genome sequences and associated metadata to a publicly available database, such as GISAID.
Report initial cases/clusters associated with virus-of-concern infection to WHO through the IHR mechanism.
Where capacity exists and in coordination with the international community, perform field investigations and laboratory assessments to improve understanding of the potential impacts of the virus of concern on COVID-19 epidemiology, severity, and the effectiveness of public health and social measures, diagnostic methods, immune responses, antibody neutralization, or other relevant characteristics.[76]
Treatment
See also: Treatment and management of COVID-19

Corticosteroids such as dexamethasone and IL6 receptor blockers such as tocilizumab (Actemra) are known to be effective for managing patients with the earlier strains of severe COVID-19. The impact on the effectiveness of other treatments was being assessed in 2021.[77][78]

On 29 November 2021, Pfizer CEO Albert Bourla said that Pfizer had submitted an Emergency Use Authorization application to the FDA for development of the RNA virus antiviral drug Paxlovid, and the company was confident that it could treat the Omicron variant.[79][medical citation needed] Merck and Ridgeback were evaluating the anti–RNA virus drug molnupiravir for omicron treatment at the time.[80]

Relating to monoclonal antibodies (mAbs) treatments, similar testing and research is ongoing. Preclinical data on in vitro pseudotyped virus data demonstrate that some mAbs designed to use highly conserved epitopes retain neutralizing activity against key mutations of Omicron substitutions.[81] Current data suggest Omicron would cause significant humoral immune evasion, while neutralizing antibodies targeting the sarbecovirus conserved region remain most effective.[82] Indeed, most receptor-binding motif (RBM)-directed monoclonal antibodies lost in vitro neutralizing activity against Omicron, with only 3 out of 29 mAbs retaining unaltered potency. Furthermore, a fraction of broadly neutralizing sarbecovirus mAbs neutralized Omicron through recognition of antigenic sites outside the RBM, including sotrovimab (VIR-7831), S2X259 and S2H97.[83]
Epidemiology

On 26 November 2021, the South African National Institute for Communicable Diseases announced that 30,904 COVID-tests (in one day) detected 2,828 new COVID infections (a 9.2% positivity rate).[84] One week later, on 3 December 2021, the NICD announced that 65,990 COVID tests had found 16,055 new infections (5.7 times as many as seven days before; positive rate 24.3%) and that 72 percent of them were found in Gauteng.[85][86] This province of South Africa is densely populated at about 850 inhabitants per km2. Gauteng's capital Johannesburg is a megacity (about 5.5 million inhabitants in the city itself plus 9.5 million in the urban region).

In November 2021 the transmissibility of the Omicron variant, as compared to the Delta variant or other variants of the COVID-19 virus, was still uncertain.[87] Omicron is frequently able to infect previously Covid-positive people.[88][89]

It has been estimated the Omicron variant diverged in late September or early October 2021, based on Omicron genome comparisons.[90] Sequencing data suggests that Omicron had become the dominant variant in South Africa by November 2021, the same month where it had been first identified in the country.[91][10] "Phylogeny suggests a recent emergence. Data from South Africa suggests that Omicron has a pronounced growth advantage there. However, this may be due to transmissibility or immune escape related, or both."[92]

Detectable changes in levels of COVID-19 in wastewater samples from South Africa's Gauteng province were seen as early as 17–23 October (week 42).[93] The National Institute for Communicable Diseases reports that children under the age of 2 make up 10% of total hospital admissions in the Omicron point of discovery Tshwane in South Africa.[94]

In the UK, the logarithmic growth rate of Omicron-associated S gene target failure (SGTF) cases over S gene target positive (SGTP) cases was estimated at 0.41 per day,[b] which is exceptionally high.[95] Furthermore, by 14 December it appears to have become the most dominant strain.[c][96] Without presuming behavior change in response to the variant, a million infections per day by December 24 are projected for a 2.5 days doubling time.[d][60] In Denmark, the growth rate has been roughly similar with a doubling time of about 2–3 days (with some geographical differences), it having reached about 39% of all COVID-19 cases on 14 December.[97][98] Switzerland is not far behind and neither is Germany.[99][100] In Scotland, Omicron apparently became the most prevalent variant on 17 December.[101][102] In Ontario it became the most prevalent strain on 13 December.[103] In the US, the variant appears to have become the most prevalent strain on December 13, growing at 0.42 per day.[104] This was one day before the CDC published the strain showed up in the variant surveillance.[105] In Belgium, the strain may become the most prevalent around 25 December,[106] and, the Netherlands appears to be on a similar path.[107][108] Other countries may not have enough timely information, as they may not use Thermo Fisher TaqPath Assay or equivalent for their PCR tests to indicate Omicron. Researchers recommend sampling at least 5% of COVID-19 patient samples in order to detect Omicron or other emerging variants.[109]

Data on the SGTF status of sampled cases in South Africa indicates a similar growth of 21% per day relative to Delta, generating an increased reproduction number by a factor of 2.4.[e] Omicron became the majority strain in South Africa around 10 November.[110][111] Another analysis showed 32% growth per day in Gauteng, South Africa, having become dominant there around 6 November.[112]
Statistics

Cumulative confirmed Omicron variant cases by country and territory

100,000–999,999
10,000–99,999
1,000–9,999
100–999
10–99
1–9
0

The chance of detecting a case particularly depends on a country's sequencing rate. For example, South Africa sequences far more samples than any other country in Africa, but at a considerably lower rate than most Western nations.[113][114] Furthermore it can take up to two weeks to return a viral sequence in places with the technical capability, hence solid statistics on confirmed cases lag the actual situation.[115] Denmark and Norway regard cases found by their variant qPCR test, which is relatively fast and checks several genes,[39] as sufficient for counting it as an Omicron, also before full sequencing.[116][117]
Confirmed and suspected cases by country and territory

view
talk
editCountry/TerritoryConfirmed cases (PANGOLIN)[118]
as of 22 DecemberConfirmed cases (GISAID)[119]
as of 22 DecemberConfirmed cases (other sources)
as of 22 DecemberSuspected cases
United Kingdom 8,207 34,573 114,625[120] 229,187[120]
Denmark 267 2,001 30,954[121] –
Canada 58 586 8,046[122] 8,282[123]
Norway 179 308 5,240[116] –
United States 937 7,346 7,355[124] –
Germany 242 300 3,198[125][126] –
South Africa 1,148 1,643 1,095[127] 19,070[128]
France 66 223 1,980[129] –
Australia 296 859 1,109[130] –
Estonia – – 1,513[131][132][133] –
Argentina 2 3 455[134][135] 80[136]
Austria 10 332 419[137][138] –
Israel 65 302 1,118[139] 861[139]
Botswana 256 291 23[140] –
South Korea 9 9 445[141][142] –
Sweden 38 303 260[143] –
Belgium 147 460 121[137][144] –
Switzerland 127 471 13[137] –
India 353 68 400[145][146][147] –
Japan 11 40 200[148] –
Spain 68 417 51[125][144] –
Netherlands 176 351 123[149][144] –
Ireland 143 144 39[150] –
Gibraltar 58 122 24[151] –
Singapore 28 238 153[152][153][154] –
Iceland – – 84[155] –
Italy 42 209 84[156] –
Chile 2 2 73[157][158] –
Portugal 48 96 69[159][144] 6[160][137]
Thailand 10 14 205[161][162][163] 20[164]
Zimbabwe – – 50[165] –
Ghana 35 66 33[140] –
Brazil 22 47 36[166] –
Finland 3 3 34[167][168][144] –
Cyprus – – 31[169][170] –
Morocco – 1 28[171] 46[171]
Kenya 10 27 27[172] –
Russia 3 27 41[173][174] –
Cayman Islands – – 44[175] 59[175]
Uganda – 1 25[176][177] –
Mexico 3 42 1[178] –
New Zealand – 29 22[179] –
Namibia – 17 18[180] –
Hong Kong 17 18 34[181] –
Indonesia – 46 46[182] –
Senegal – 26 3[183] –
Mozambique 16 17 2[184] 2[124]
Greece 2 2 17[137][185] –
Bermuda – – 144[186][187] –
Latvia – – 14[188][144] –
Romania 2 15 25[189][190][191] –
Malaysia 2 11 62[192] –
Zambia – 17 11[193] –
Nigeria 11 45 6[194] –
Czech Republic 9 39 10[137][195][144] –
Slovenia 2 3 51[196][144][197] –
Lebanon 4 4 433[198][199] 16[198]
Reunion 6 7 2[200] –
Mauritius – 7 7[124] –
Poland 2 18 1[173] –
Rwanda – – 6[173] –
Turkey 3 42 6[201] –
Montenegro – 6 5[202] –
Cambodia – 5 1[203] –
Peru – 12 4[204] –
Jordan – 19 328[205][206] –
China – 3 4[207][208][209] –
Cuba – – 4[210] –
Croatia 2 8 3[137] –
Egypt – 1 3[173] –
Malawi 3 12 3[211] –
Palestinian Territory – – 23[212] –
Taiwan – – 27[213][214] –
Lithuania 2 3 2[215] –
Colombia – 3 3[216]
Slovakia 3 10 3[217] –
Trinidad and Tobago – 3 1[218] –
Puerto Rico – 23 1[219] –
Fiji – – 2[220] –
Nepal 2 3 2[221] –
Philippines – 3 3[222][223] –
Northern Cyprus – – 2[224] –
Bangladesh 2 2 2[225] –
Liechtenstein – 3 1[226] 3[124]
Hungary – – 61[227][144][228] –
Oman – 9 2[229] –
Pakistan – 3 1[230] –
Sri Lanka 2 3 1[231] –
Georgia 1 24[232][233] 53[233]
Algeria – 1 1[173] –
Bahrain – – 1[234] –
Ecuador – 22 1[235] –
Kuwait – – 1[236] –
Luxembourg – 1 1[137] –
Maldives – 1 1[237] –
Sierra Leone – 1 1[238] –
Saudi Arabia – – 1[239] –
Tunisia – – 1[240] –
United Arab Emirates – – 1[241] –
Iran – – 14[242][243] –
Ukraine – 1 1[244] –
Panama – 1 1[245] –
Costa Rica – 1 1[246] –
Aruba – – 1[247] –
North Macedonia – – 1[248] –
Brunei – 1 – –
Vietnam – 1 – –
World total (104 countries and territories) 8,340 16,561 173,482 257,848




History
Reported cases
See also: Timeline of the SARS-CoV-2 Omicron variant

On 24 November 2021, the variant was first reported to the WHO from South Africa,[1] based on samples that had been collected from 14 to 16 November.[249] South African scientists were first alerted by samples from the very beginning of November where the PCR tests had S gene target failure (occurs in a few variants, but not in Delta which dominated in the country in October) and by a sudden increase of COVID-19 cases in Gauteng; sequencing revealed that more than 70 percent of samples collected in the province between 14 and 23 November were a new variant.[250][251] The first confirmed specimens of Omicron were collected on 8 November 2021 in South Africa,[10][11] and on 9 November in Botswana.[26] Likely Omicron (SGTF) samples had occurred on 4 November 2021 in Pretoria, South Africa.[252]

When WHO was alerted on 24 November, Hong Kong was the only place outside Africa that had confirmed a case of Omicron; one person who traveled from South Africa on 11 November, and another traveler who was cross-infected by this case while staying in the same quarantine hotel.[251][253][254]

On 25 November, one confirmed case was identified in Israel from a traveler returning from Malawi,[255] along with two who returned from South Africa and one from Madagascar.[256] All four initial cases reported from Botswana occurred among fully vaccinated individuals.[257]

On 26 November, Belgium confirmed its first case; an unvaccinated person who had travelled from Egypt via Turkey on 11 November.[12][258][259] All three initial confirmed and suspected cases reported from Israel occurred among fully vaccinated individuals,[255] as did a single suspected case in Germany.[260]

On 27 November, two cases were detected in the United Kingdom, another two in Munich, Germany and one in Milan, Italy.[261]

On 28 November, 13 cases were confirmed in the Netherlands among the 624 airline passengers who arrived from South Africa on 26 November.[262] Confirmation of a further 5 cases among these passengers followed later.[263] Entry into the Netherlands generally required having been vaccinated or PCR-tested, or having recovered. The passengers of these two flights had been tested upon arrival because of the newly imposed restrictions (which were set in place during their flight), after which 61 tested positive for SARS-CoV-2.[264] A further two cases were detected in Australia. Both people landed in Sydney the previous day, and travelled from southern Africa to Sydney Airport via Doha Airport. The two people, who were fully vaccinated, entered isolation; 12 other travellers from southern Africa also entered quarantine for fourteen days, while about 260 other passengers and crew on the flight have been directed to isolate.[265] Two travellers from South Africa who landed in Denmark tested positive for COVID-19; it was confirmed on 28 November that both carried the Omicron variant.[266][267] On the same day, Austria also confirmed its first Omicron case.[268] A detected Omicron case was reported in the Czech Republic, from a traveler who spent time in Namibia.[269] Canada also reported its first Omicron cases, with two from travelers from Nigeria, therefore becoming the first North American country to report an Omicron case.[270]

On 29 November, a positive case was recorded in Darwin, Australia. The person arrived in Darwin on a repatriation flight from Johannesburg, South Africa on 25 November, and was taken to a quarantine facility, where the positive test was recorded.[271] Two more people who travelled to Sydney from southern Africa via Singapore tested positive.[272] Portugal reported 13 Omicron cases, all of them members of a soccer club.[273] Sweden also confirmed their first case on 29 November,[274] as did Spain, when a traveler came from South Africa.[275]

On 30 November, the Netherlands reported that Omicron cases had been detected in two samples dating back as early as 19 November.[276] A positive case was recorded in Sydney from a traveller who had visited southern Africa before travel restrictions were imposed, and was subsequently active in the community.[277] Japan also confirmed its first case.[278] Two Israeli doctors have tested positive and have entered isolation. Both of them had received three shots of the Pfizer vaccine prior to testing positive.[279] In Brazil, three cases of the Omicron variant were confirmed in São Paulo.[280] Another five are under suspicion.[281][282] A person in Leipzig, Germany with no travel history nor contact with travellers tested positive for Omicron.[283]

On 1 December, the Omicron variant was detected in three samples in Nigeria that had been collected from travelers from South Africa within the last week.[284][285] On the same day, public health authorities in the United States announced the country's first confirmed Omicron case. A resident of San Francisco who had been vaccinated returned from South Africa on 22 November, began showing mild symptoms on 25 November[286] and was confirmed to have a mild case of COVID-19 on 29 November.[287] Ireland and South Korea also reported their first cases.[288] South Korea reported its cases from five travelers arriving in South Korea from Nigeria.[289]

On 2 December, Dutch health authorities confirmed that all 14 passengers with confirmed Omicron infection on 26 November had been previously vaccinated.[290] The same day, the Norwegian Institute of Public Health confirmed that 50 attendees of a company Christmas party held at a restaurant in Norway's capital, Oslo, were infected with the Omicron variant.[291] France has confirmed only 25 cases of the new Omicron variant but officials say the number could jump significantly in the coming weeks.[292]

By 6 December, Malaysia confirmed its first case of the variant. The case was a South African student entering to study at a private university.[293] In Namibia, 18 cases out of 19 positive COVID-19 samples that had been collected between 11 and 26 November were found to be Omicron, indicating a high level of prevalence in the country.[294] Fiji also confirmed two positive cases of the variant. They travelled from Nigeria arriving in Fiji on November 25.[295]

On 8 December, WHO announced the variant had been detected in 57 countries.[296]

On 9 December, Richard Mihigo, coordinator of the World Health Organisation's Immunisation and Vaccine Development Programme for Africa, announced that Africa accounted for 46% of reported cases of the Omicron variant globally.[297]

On 13 December, the first death of a person with Omicron was reported in the UK.[298]

On 16 December, New Zealand confirmed its first case of the Omicron variant, an individual who had traveled from Germany via Dubai.[299]

On 23 December, the first death of a person with Omicron was reported in Germany.[126]
Market reactions
Main article: Financial market impact of the COVID-19 pandemic

Worry about the potential economic impact of the Omicron variant led to a drop in global markets on 26 November, including the worst drop of the Dow Jones Industrial Average in 2021, led by travel-related stocks. The price of Brent Crude and West Texas Intermediate oil fell 10% and 11.7%, respectively.[300] Cryptocurrency markets were also routed.[301][302][303] The South African rand has also hit an all-time low for 2021, trading at over 16 rand to the dollar, losing 6% of its value in November.[304][305][306]

In early December 2021, the chairman of the Federal Reserve, Jerome Powell, testified before the U.S. Senate Committee on Banking that "The recent rise in Covid-19 cases and the emergence of the Omicron variant pose downside risks to employment and economic activity and increased uncertainty for inflation."[307]
International response

On 26 November, WHO advised countries not to impose new restrictions on travel, instead recommending a "risk-based and scientific" approach to travel measures.[308] On the same day, the European Centre for Disease Prevention and Control (ECDC) reported modeling indicating that strict travel restrictions would delay the variant's impact on European countries by two weeks, possibly allowing countries to prepare for it.[30]

After the WHO announcement, on the same day, several countries announced travel bans from southern Africa in response to the identification of the variant, including the United States, which banned travel from eight African countries,[309] although it notably did not ban travel from any European countries, Israel, Canada, or Australia where cases were also detected at the time the bans were announced. Other countries that also implemented travel bans include Japan, Canada, the European Union, Israel, Australia, the United Kingdom, Singapore, Malaysia, Indonesia, Morocco, and New Zealand.[310][311]

The Brazilian Health Regulatory Agency recommended flight restrictions regarding the new variant.[312] The state of New York declared a state of emergency ahead of a potential Omicron spike, although no cases had yet been detected in the state or the rest of the United States.[313] On 27 November, Switzerland introduced obligatory tests and quarantine for all visitors arriving from countries where the variant was detected, which originally included Belgium and Israel.[314]

In response to the various travel bans, South African Minister of Health Joe Phaahla defended his country's handling of the pandemic and said that travel bans went against the "norms and standards" of the World Health Organization.[315]

Some speculate that travel bans could have a significant impact on South Africa's economy by limiting tourism and could lead to other countries with economies that are reliant on tourism to hide the discovery of new variants of concern. Low vaccine coverage in less-developed nations could create opportunities for the emergence of new variants, and these nations also struggle to gain intellectual property to develop and produce vaccines locally.[316] At the same time, inoculation has slowed in South Africa due to vaccine hesitancy and apathy, with only 35% of the population being fully vaccinated as of November 2021.[317]

On 29 November 2021, the WHO warned countries that the variant poses a very high global risk with severe consequences and that they should prepare by accelerating vaccination of high-priority groups and strengthening health systems. WHO director-general Tedros Adhanom described the global situation as dangerous and precarious and called for a new agreement on the handling of pandemics, as the current system disincentivizes countries from alerting others to threats that will inevitably land on their shores. CEPI CEO Richard Hatchett said that the variant fulfilled predictions that transmission of the virus in low-vaccination areas would accelerate its evolution.[69]

In preparation for the Omicron variant arriving in the United States, president Joe Biden has stated that the variant is "cause for concern, not panic" and reiterated that the government is prepared for the variant and will have it under control. He also stated that large-scale lockdowns, similar to the ones in 2020 near the beginning of the pandemic, are "off the table for now."[318]

In mid-December 2021, multiple Canadian provinces reinstated restrictions on gatherings and events such as sports tournaments, and tightened enforcement of proof of vaccination orders. British Columbia expressly prohibited any non-seated "organized New Year's Eve event",[319][320][321] while Quebec announced a partial lockdown on 20 December, ordering the closure of all bars, casinos, gyms, schools, and theatres, as well as imposing restrictions on the capacity and operating hours of restaurants, and the prohibition of spectators at professional sporting events.[322]
See also

COVID-19 portal
Medicine portal
Viruses portal
Timeline of the SARS-CoV-2 Omicron variant
COVID-19 pandemic in Africa
COVID-19 vaccination in Africa
COVID-19 vaccination in Botswana
COVID-19 vaccination in South Africa
Variants of SARS-CoV-2
Other variants of either interest or concern: Alpha, Beta, Gamma, Delta, Epsilon, Zeta, Eta, Theta, Iota, Kappa, Lambda, Mu

Notes

^ ECDC rapid risk assessment of Omicron,[47] annex 1.
^ Logarithmic growth rate of 0.41/day means that the log odds loge(SGTF/SGTP) is increasing by 0.41 in a day. So SGTF/SGTP was increasing by a multiplicative factor of exp(0.41) ~ 1.51. This is substantially higher than a naive increase to 100%+41%. The difference is mathematically due to compound growth within the day, which does not imply that epidemically people are already infectious within a day. Rather, simplified (non-delay) differential equations are used for convenience for the modeling. This also indicates a doubling time of log_e(2)/(0.41/day) ~ 1.69 days for the Omicron to Delta prevalence ratio.
^ Referring to ref 6 in the reference, where the x-axis is crossed at 14 December
^ A doubling time of 2.5 days corresponds to an exponential growth rate of ln(2)/(2.5 days) ~ 28%/day. Direct comparison to the logistic growth rate needs to take the growth/decline of Delta into account
^ With a presumed an identical person-to-person serial interval of log_e(2.4)/0.21 ~ 4.2 days, or a distribution thereof to the same effect.
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Further reading
WHO: Update on Omicron
Live Omicron Variant Location Map
Omicron variant: What have COVID vaccine makers said and are they working on new doses?
Callaway, Ewen; Ledford, Heidi (2 December 2021). "How bad is Omicron? What scientists know so far". Nature. 600 (7888): 197–199. doi:10.1038/d41586-021-03614-z. PMID 34857948. S2CID 244840636. Retrieved 3 December 2021.
External links
Corum, Jonathan; Zimmer, Carl (9 February 2021). "Coronavirus Variant Tracker". The New York Times. Archived from the original on 30 November 2021. Retrieved 1 December 2021. Constantly Updated
Archived video:
Mohale F, Phaahla J, Oliveira T, Lessels R, Gottberg A, Moore P, Crisp N (25 November 2021). Health Department briefs media about a new so-called super-variant (Internet video live stream). South Africa: eNCA. Retrieved 27 November 2021. Archived at the Wayback Machine and Ghostarchive.
Oliveira T, Kamwendo S (26 November 2021). Professor Tulio de Oliviera on the new COVID-19 variant (Internet video live stream). South Africa: SABC News. Archived from the original on 29 November 2021. Retrieved 27 November 2021. Archived at the Wayback Machine and Ghostarchive

Switzerland: Transgender Persons May Change Gender Marker and First Name Starting January 1, 2022

Switzerland: Transgender Persons May Change Gender Marker and First Name Starting January 1, 2022




In its session of October 27, 2021, the Swiss Federal Council — Switzerland’s government — in accordance with amendments passed by the Swiss parliament, decided that effective January 1, 2022, transgender persons or persons with a gender variance will be able to change their gender marker and first name quickly and without bureaucratic hurdles. The Swiss parliament had adopted the amendment to the Swiss Civil Code (Zivilgesetzbuch, ZGB) and the amendment to the Civil Status Ordinance (Zivilstandsverordnung, ZStV) on December 18, 2020.

Affected persons must simply state at the civil registry that they are firmly convinced that their registered gender does not match their gender identity to change the entry. They may choose one or more new first names. Persons under 16 years of age or persons who are subject to various types of guardianship require permission from their legal representative for the change. (ZGB new art. 30b.)

The amendments do not introduce a third gender option in Switzerland. Family law relationships, such as marriage, registered partnerships, and parentage, are also not affected.

Background on a Third Gender in Switzerland

Swiss law currently recognizes only binary gender (male and female). The gender of the child is one of the mandatory entries in the civil registry when a child is born. (ZStV art. 8.) The parents are obligated to notify the civil registry office within three days of the birth. (Art. 35, para. 1, sentence 1 in conjunction with art. 8.) The Swiss Federal Civil Registry Office (Eidgenössisches Amt für das Zivilstandswesen, EAZW) has stated that it is not possible to leave the gender entry open if the gender cannot be clearly determined at birth. Either a female or a male gender must be entered. (Official Notice from the EAZW at 3.)However, two parliamentary motions are pending to introduce a third gender or to eliminate gender entries altogether. The Swiss Federal Council is currently working on a report to address these motions.





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Sweden: Amendment Requiring Banks to Provide Access to Cash Services Enters into Force

Sweden: Amendment Requiring Banks to Provide Access to Cash Services Enters into Force




(Feb. 5, 2021) On January 1, 2021, an amendment to the Swedish Act on Payment Services (Lagen (SFS 2010:751) om betaltjänster) requiring banks to provide access to cash services entered into force.

The amendment stipulates as follows:


1 § Such credit institutions and branches of foreign credit institutions that supply customers with payment accounts that include basic functions must provide services that make it possible to withdraw cash from these accounts (places for cash withdrawal) to an adequate extent throughout the country.

Such credit institutions and branches of foreign credit institutions that supply businesses with payment accounts that include basic functions must provide services that make it possible to deposit cash into these accounts (places for daily cash deposits) to an adequate extent throughout the country.

The first and second paragraphs apply only to institutions and branches that on July 1 of the preceding year had more than 70 billion kroner [about US$8.4 billion] in deposits from the public.

Under Swedish law, cash is legal tender and the Swedish government must accept it. (5 kap. 1 § Lagen om Sveriges riksbank (SFS 1988:1385).) However, as established by the Swedish Supreme Administrative Court in 2015, businesses and shops are not required to accept cash because the refusal to accept cash or credit cards is within the contractual freedom between businesses and consumers, whereas government entities must accept cash.

In passing the amendment to the Act on Payment Services, the Swedish government and Parliament found that because cash is legal tender, the government also has the duty to ensure that people have “reasonable access” (rimlig tillgång) to cash throughout the country.

As determined in the legislative history of the law, “reasonable access” throughout the country means that


[n]o more than 0.3 percent of the population (about 30,000 persons in 2017) shall have farther than 25 kilometers [about 15.5 miles] to a place for cash withdrawal and no more than 1.22 percent of the population (about 122,000 persons in 2017) shall have farther than 25 kilometers to the closest place for daily cash deposits to their bank account. (Prop. 2019/20:23 Bilaga 1.)

Internationally Sweden has a comparatively low circulation of cash, with only 1.2% of gross domestic product (GDP) in cash in 2018, placing it “at the lowest level of comparable countries.” The government estimates that 0.23% of the population had more than 25 kilometers (km) to the nearest cash service in 2017. According to the same report, the only region where no inhabitant had more than 20 km to the nearest cash service was in Skåne, Sweden’s southernmost region. 0.17% of the population had more than 30 km to the nearest cash service provider. A clear majority of persons with more than 30 km or 40 km to the nearest provider were living in the northern regions of Sweden. 90% of all persons with more than 40 km to the nearest cash service live in the northernmost regions of Jämtland, Norrbotten, and Västerbotten.

Banks or international branches that violate the requirement to provide deposit and withdrawal services are subject to monetary sanctions. The amount of the sanction will consist of the total number of persons affected, to the nearest thousand, who do not have access to deposit or withdrawal services, times the level of deposits from the public to the bank as measured in relation to the total deposits from the public in Sweden, times 5,000 Swedish kroner (about US$600), but must not exceed 10% of the institution’s (or the group’s) total revenue or 5 million euros (about US$6 million). (9 kap. 7–8 §§.)




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Netherlands: Amsterdam District Court Classifies Uber Drivers as Employees

Netherlands: Amsterdam District Court Classifies Uber Drivers as Employees










On September 13, 2021, the District Court of Amsterdam (Rechtbank Amsterdam) held that the legal relationship between Uber and its drivers meets all the characteristics of an employment contract. As a result, Uber drivers are covered by the collective labor agreement for taxi transport, meaning they are eligible to be paid the hourly wage owed under the agreement, including holiday allowance, a surcharge of 9.7% for holidays not taken, and a surcharge of 20% for overtime. Some drivers might be able to claim back pay. In addition, the court ordered Uber to pay the plaintiff, the Federation of Dutch Trade Unions, compensation in the amount of 50,000 euros (about US$58,680) for failing to comply with the collective labor agreement for taxi transport.

Facts of the Case

The applicant in the case was the Federation of Dutch Trade Unions (Federatie Nederlandse Vakbeweging, FNV). FNV negotiates and concludes collective labor agreements on behalf of workers and monitors compliance with these agreements. It is a party to the collective labor agreement for taxi transport (CAO Taxivervoer), which has been declared generally binding. (Wet AVV art. 2.) (Case, paras. 1.1., 1.2.) FNV argued that Uber organized the transport services in detail and that Uber drivers were therefore employees of a taxi company. (Para. 3.) As such, they were entitled to back pay under the collective labor agreement for taxi drivers.

The defendant Uber, on the other hand, claimed that it was a technology company only and offered a platform to connect drivers and passengers. It therefore stated that the drivers were self-employed and also questioned whether the drivers even wanted to be considered employees. (Paras. 10–13.)

Decision

The District Court of Amsterdam held that the legal relationship between Uber and its drivers meets all the characteristics of an employment contract, which are set out in section 7:610 of the Dutch Civil Code (Burgerlijk Wetboek). The provision states that “[a]n employment agreement is an agreement under which one of the parties (‘the employee’) engages himself or herself with the opposite party (‘the employer’) to perform work for a period of time in service of this opposite party in exchange for payment.” These requirements were specified by the Dutch Supreme Court (Hoge Raad) in the cases Groen/Schoevers and X./Gemeente Amsterdam. The court reiterated that an employment contract requires the performance of work, wages, and a relationship of authority (subordination).

With regard to the (personal) performance of work, the court held that “[t]here is no doubt that the drivers work for Uber” as they transport passengers for Uber via the Uber app. (Para. 19.) The court rejected the argument that Uber was a mere technology company offering a platform. Uber drivers must agree to Uber’s terms and conditions to use the platform and offer transport services. The court concluded that the drivers enter into an agreement with Uber to offer transport services. Furthermore, transport services are at the core Uber’s business model. Lastly, Uber ensures that drivers personally perform the work by requiring a selfie before a ride. (Paras. 19–22.)

With regard to wages, the court stated that wages are the agreed consideration for work performed. It held that the fact that the passengers pay the fare to Uber Pay (another entity) and that Uber Pay in turn pays the drivers does not mean that the drivers do not receive a salary from Uber. (Paras. 23, 24.)

Lastly, the court examined the criterion of “authority,” which it determined to be the decisive element of an employment contract. (Para. 25.) It stated that “[i]n today’s technology-dominated age, the criterion of ‘authority’ … deviates from the classical model. Employees have become more independent and perform their work at more variable (self-chosen) times. We hold that the relationship between Uber and the drivers involves this “modern relationship of authority.” (Para. 26.) It explained that drivers are in a position of subordination to Uber as they must accept the non-negotiable terms and conditions to use the Uber app and have no influence on subsequent changes. Furthermore, the algorithm of the Uber app, programmed by Uber, determines how rides are allocated and which priorities are set. Drivers have no influence on the rates for a ride. The court highlighted that the Uber app has a disciplinary effect with low average ratings leading to removal. Even though there is the theoretical possibility to cancel an accepted ride or reject an offered ride, this will lead to exclusion from the app or log the driver off the system. The court concluded that the algorithm of the Uber app has a financial incentive as well as a disciplining and instructing effect. (Paras. 27–33.)

The court held also that Uber must comply with the provisions of the collective labor agreement for taxi transport insofar as they have been declared generally binding, even if the drivers do not wish so. In the court’s view, making the application of generally binding collective agreements dependent on the will of employees would put the effectiveness of the whole system in question. (Para. 42.)

Related Court Decisions

On February 19, 2021, the Supreme Court of the United Kingdom ruled that Uber drivers are workers entitled to employment law protections.

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In the room where it happens: a conversation with Mark Rutte and Justin ...

Have you ever wanted to share your thoughts with a world leader? This is your chance! On their way to the UN Climate Change Conference (COP26)t in Glasgow, Prime Minister Mark Rutte and Prime Minister Justin Trudeau will stop in The Hague to have a conversation with students and young professionals about their priorities. What are your concerns on global peace and justice issues? Do you have questions about how the Dutch and Canadians are tackling climate change? Lingering questions on how we’re continuing the fight against COVID-19 around the world? Or how to create a more inclusive society? This is your chance to ask them! Join us here for an up close and personal conversation with these two world leaders on Friday, October 29th. The leaders will answer questions in person and online, so don’t miss it! Event moderator is former UN Youth Representative Hajar Yakoubi. Her personal goal is to get more young people included in places of decision making in politics. Event is co-organised by Dutch Ministry of Foreign Affairs, Municipality of the Hague and Leiden University. Join us. LIVE STREAM Join this dialogue on HagueTalks YouTube channel: https://bit.ly/HTyou 17:00 – 18:30 UTC+1/GMT+1 (Amsterdam) HAGUE TALKS is a meeting place for creative minds, peace inventors and game changers in the field of peace and justice. For more info visit www.haguetalks.com Twitter - https://twitter.com/HagueTalks YouTube - https://www.youtube.com/haguetalks Facebook - https://www.facebook.com/HagueTalks/ Instagram - https://www.instagram.com/haguetalks/ Periscope - https://www.pscp.tv/HagueTalks

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