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Yong, E. (2021, December 16). America Is Not Ready for Omicron. The Atlantic. https://www.theatlantic.com/health/archive/2021/12/america-omicron-variant-surge-booster/621027/

Tom Peacock. (2022, January 3). Lots of chat about B.1.640.2 in the last few days—Just a few points to keep in mind: - B.1.640.2 actually predates Omicron—In all that time there are exactly... 20 sequences (compared to the >120k Omis in less time) Def not one worth worrying about too much at the mo... [Tweet]. @PeacockFlu. https://twitter.com/PeacockFlu/status/1478118173903839237

Covid’s evolution: ‘With each passing wave, we’ve seen greater transmissibility.’ (n.d.). MSN. Retrieved January 15, 2022, from https://www.msn.com/en-us/news/us/covid-s-evolution-with-each-passing-wave-we-ve-seen-greater-transmissibility/vi-AARYwCn

Natalie E. Dean, PhD. (2022, January 2). Interesting. From this afternoon in @nytimes: Https://nytimes.com/2022/01/01/us/omicron-covid-holidays-surge-testing.html https://t.co/qCCkjXKS2K [Tweet]. @nataliexdean. https://twitter.com/nataliexdean/status/1477487783992254464

Devlin, H., Davis, N., & correspondents, N. D. S. (2022, January 14). Expect another Omicron wave in early summer, Sage says. The Guardian. https://www.theguardian.com/world/2022/jan/14/expect-another-covid-omicron-wave-in-early-summer-sage-says

O’donnell, C., & Aboulenein, A. (2021, December 30). COVID-19 hospitalization surge among U.S. children spurs new Omicron concerns. Reuters. https://www.reuters.com/world/us/covid-19-hospitalization-surge-among-us-children-spurs-new-omicron-concerns-2021-12-30/

Helen Branswell. (2022, January 11). 1. #Omicron’s takeover was stunningly rapid and is now nearly complete, at least in the U.S. The latest “Nowcast” from @CDCgov (which uses recent data to model what’s happen now) suggests most of what is circulating here now is omicron. Https://t.co/6w3e8Ut5NW [Tweet]. @HelenBranswell. https://twitter.com/HelenBranswell/status/1480970453313277954

Brian Wasik. (2022, January 13). A week later and NY State data still showing an extremely high hospitalization VE in the face of Omicron. Https://t.co/6tWPqyamoZ [Tweet]. @BrianRWasik. https://twitter.com/BrianRWasik/status/1481697336019537921

Active epidemiological investigation on SARS-CoV-2 infection caused by Omicron variant (Pango lineage B.1.1.529) in Japan: Preliminary report on infectious period. (n.d.). Retrieved January 14, 2022, from https://www.niid.go.jp/niid/en/2019-ncov-e/10884-covid19-66-en.html

Dolgin, E. (2022). Omicron thwarts some of the world’s most-used COVID vaccines. Nature. https://doi.org/10.1038/d41586-022-00079-6

Zuo, F., Abolhassani, H., Du, L., Piralla, A., Bertoglio, F., Campos-Mata, L. de, Wan, H., Schubert, M., Wang, Y., Sun, R., Cassaniti, I., Vlachiotis, S., Kumagai-Braesch, M., Andréll, J., Zhang, Z., Xue, Y., Wenzel, E. V., Calzolai, L., Varani, L., … Pan-Hammarström, Q. (2022). Heterologous immunization with inactivated vaccine followed by mRNA booster elicits strong humoral and cellular immune responses against the SARS-CoV-2 Omicron variant (p. 2022.01.04.22268755). https://doi.org/10.1101/2022.01.04.22268755

•. (n.d.). NYC ER Doc Breaks Down How Omicron Affects the Boosted, Vaxxed and Unvaccinated. NBC New York. Retrieved January 13, 2022, from https://www.nbcnewyork.com/news/coronavirus/nyc-er-doc-breaks-down-how-omicron-affects-the-boosted-vaxxed-and-unvaccinated/3468742/

Geddes, L., & correspondent, L. G. S. (2022, January 11). Will Covid-19 become less dangerous as it evolves? The Guardian. https://www.theguardian.com/world/2022/jan/11/will-covid-19-become-less-dangerous-as-it-evolves

Prof. Christina Pagel. (2022, January 10). I agree with pretty much all of this @FT article https://ft.com/content/e200156f-2e5a-4165-8aa2-28c24fe3c036 https://t.co/zhqPpqdyn7 [Tweet]. @chrischirp. https://twitter.com/chrischirp/status/1480568139947692041

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The Spread of the Omicron Variant and Vaccine Effectiveness—January 11, 2022. (2022, January 11). Leger. https://leger360.com/surveys/legers-north-american-tracker-january-11-2022/

U.S. breaks record with more than 145,000 covid-19 hospitalizations. (n.d.). Washington Post. Retrieved January 12, 2022, from https://www.washingtonpost.com/health/2022/01/10/covid-hospitalized-omicron/

Omicron largely evades immunity from past infection or two vaccine doses | Imperial News | Imperial College London. (n.d.). Imperial News. Retrieved January 12, 2022, from https://www.imperial.ac.uk/news/232698/omicron-largely-evades-immunity-from-past/

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Sidik, S. M. (2022). Immunity against Omicron from breakthrough infection could be a matter of timing. Nature. https://doi.org/10.1038/d41586-022-00004-x

Blackall, M. (2021, May 8). Outgoing vaccine chief claims Covid will not be circulating in UK by August. The Guardian. https://www.theguardian.com/world/2021/may/08/clive-dix-claims-covid-not-in-uk-by-august-vaccine

CDC studies confirm mask-wearing in schools reduces spread of COVID-19. (2021, September 27). New Atlas. https://newatlas.com/health-wellbeing/cdc-mask-mandate-children-schools-coronavirus-effective/

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Augustin, E. (2022, January 5). Cuba’s vaccine success story sails past mark set by rich world’s Covid efforts. The Guardian. https://www.theguardian.com/world/2022/jan/05/cuba-coronavirus-covid-vaccines-success-story

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author.fullName}. (n.d.). 2022 preview: What will the coronavirus do next? New Scientist. Retrieved January 4, 2022, from https://www.newscientist.com/article/mg25233661-800-2022-preview-what-will-the-coronavirus-do-next/

Omicron peak could be “long and drawn out”, Sage scientists warn as pressure mounts on NHS. (2022, January 3). Inews.Co.Uk. https://inews.co.uk/news/politics/omicron-covid-variant-uk-peak-long-drawn-out-sage-scientists-warning-nhs-1380110

Crist, C. (n.d.). First Omicron Death in U.S. Was Reinfection. WebMD. Retrieved January 4, 2022, from https://www.webmd.com/lung/news/20211224/first-omicron-death-in-u-s-was-reinfection

Carreño, J. M., Alshammary, H., Tcheou, J., Singh, G., Raskin, A., Kawabata, H., Sominsky, L., Clark, J., Adelsberg, D. C., Bielak, D., Gonzalez-Reiche, A. S., Dambrauskas, N., Vigdorovich, V., Group, P. S., Srivastava, K., Sather, D. N., Sordillo, E. M., Bajic, G., van Bakel, H., … Krammer, F. (2021). Activity of convalescent and vaccine serum against SARS-CoV-2 Omicron. Nature. https://doi.org/10.1038/d41586-021-03846-z

Davis, N., & correspondent, N. D. S. (2021, December 31). What do we know about the Omicron Covid variant so far? The Guardian. https://www.theguardian.com/world/2021/dec/31/what-do-we-know-about-the-omicron-covid-variant-so-far

Colson, P., Delerce, J., Burel, E., Dahan, J., Jouffret, A., Fenollar, F., Yahi, N., Fantini, J., La Scola, B., & Raoult, D. (2021). Emergence in Southern France of a new SARS-CoV-2 variant of probably Cameroonian origin harbouring both substitutions N501Y and E484K in the spike protein [Preprint]. Infectious Diseases (except HIV/AIDS). https://doi.org/10.1101/2021.12.24.21268174

Keeling, M. J., Brooks-Pollock, E., Challen, R. J., Danon, L., Dyson, L., Gog, J. R., Guzman-Rincon, L., Hill, E. M., Pellis, L. M., Read, J. M., & Tildesley, M. (2021). Short-term Projections based on Early Omicron Variant Dynamics in England. (p. 2021.12.30.21268307). https://doi.org/10.1101/2021.12.30.21268307

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Omicron and children: Pediatric hospitals in parts of U.S. filling fast. (n.d.). Washington Post. Retrieved December 28, 2021, from https://www.washingtonpost.com/health/2021/12/24/omicron-children-hospitalizations-us/

Murray, J. (2021, December 28). Omicron is ‘not the same disease’ as earlier Covid waves, says UK scientist. The Guardian. https://www.theguardian.com/world/2021/dec/28/omicron-is-not-the-same-disease-as-earlier-covid-waves-says-uk-scientist

Viral Genome sequencing facility in India

• 38 labs

A Marm Kilpatrick. (2021, November 24). How do we get broad immunity to SARS-CoV-2 that will protect against future variants? 2 studies (are there more?) suggest that vaccination followed by infection gives broader protection than infection followed by vaccination. @florian_krammer @profshanecrotty @GuptaR_lab https://t.co/rqdf6rE9ej [Tweet]. @DiseaseEcology. https://twitter.com/DiseaseEcology/status/1463391782742335491

Omicron largely evades immunity from past infection or two vaccine doses | Imperial News | Imperial College London. (n.d.). Imperial News. Retrieved December 21, 2021, from https://www.imperial.ac.uk/news/232698/modelling-suggests-rapid-spread-omicron-england/

Press, A. (2021, December 18). Court rules Biden’s vaccine mandate for large employers can take effect. The Guardian. https://www.theguardian.com/us-news/2021/dec/18/court-rules-bidens-vaccine-mandate-for-large-employers-can-take-effect

Richterman, A., Scott, J., & Cevik, M. (2021). Covid-19 vaccines, immunity, and boosters. BMJ, 375, n3105. https://doi.org/10.1136/bmj.n3105

Reuters. (2021, December 20). Moderna says booster produces strong antibody response to Omicron. The Guardian. https://www.theguardian.com/world/2021/dec/20/moderna-booster-strong-antibody-response-omicron-covid-vaccine-variant

Colin Davis. (2021, December 20). Update for 20th Dec. The trend line still reflects 1.8 day doubling (it’s 1.7 days if we look at just the last week). Today’s number is down, but I wouldn’t read too much into that at this point. Https://t.co/kOCjxhRbop [Tweet]. @ProfColinDavis. https://twitter.com/ProfColinDavis/status/1472969632705392640

Facebook, Twitter, options, S. more sharing, Facebook, Twitter, LinkedIn, Email, URLCopied!, C. L., & Print. (2021, December 17). Op-Ed: How can we prevent a second winter of despair with Omicron? Los Angeles Times. https://www.latimes.com/opinion/story/2021-12-17/op-ed-averting-a-second-winter-of-despair-with-omicron

SPI-M-O: Consensus statement on COVID-19, 15 December 2021. (n.d.). GOV.UK. Retrieved 20 December 2021, from https://www.gov.uk/government/publications/spi-m-o-consensus-statement-on-covid-19-15-december-2021/spi-m-o-consensus-statement-on-covid-19-15-december-2021

Harry Spoelstra. (2021, November 26). Breaking: ECDC has designated B.1.1.529 today as a #VOC https://t.co/WyLnc9xUoJ [Tweet]. @HarrySpoelstra. https://twitter.com/HarrySpoelstra/status/1464261361370910721

Harry Spoelstra. (2021, November 26). Breaking: ECDC has designated B.1.1.529 today as a #VOC https://t.co/WyLnc9xUoJ [Tweet]. @HarrySpoelstra. https://twitter.com/HarrySpoelstra/status/1464261361370910721

Eric Topol. (2021, November 27). View of key mutations of Omicron’s 50, with 30 in the spike protein, 15 in its receptor binding domain https://ft.com/content/42c5ff3d-e676-4076-9b9f-7243a00cba5e http://covariants.org @EllingUlrich @_b_meyer https://t.co/onMoNFVLFJ [Tweet]. @EricTopol. https://twitter.com/EricTopol/status/1464452102382448643

World Health Organization (WHO). (2021, December 2). Dr @mvankerkhove updates on what we know so far about the new #COVID19 variant of concern, Omicron ⬇️ https://t.co/43jqMUotrX [Tweet]. @WHO. https://twitter.com/WHO/status/1466376465990180864

Arieh Kovler. (2021, November 26). Israel has identified four cases of the B.1.1.529 variant, all recent travellers. One case, a 32-year-old woman returning from South Africa, was triple vaccinated with Pfizer and had her 3rd dose just two months ago. [Tweet]. @ariehkovler. https://twitter.com/ariehkovler/status/1464190991204859919

Acme Birch Beer. (2021, December 13). A long thread on @NYTimes/@washingtonpost/@TheAtlantic’s favorite prediction-making expert, Monica Gandhi. Feb 22, 2021: “I need to say variants, shmariants, okay? I’m sorry, I don’t know what kind of trouble that’s going to get me in...” https://t.co/CwQL6QBG78 [Tweet]. @KindAndUnblind. https://twitter.com/KindAndUnblind/status/1470389931679883268

Benjy Renton. (2021, December 14). New data from CDC finds that the Omicron variant represented 2.9% of new cases in the US last week. Https://covid.cdc.gov/covid-data-tracker/#variant-proportions https://t.co/AqM8a1vekm [Tweet]. @bhrenton. https://twitter.com/bhrenton/status/1470765699907870729

Tom Moultrie. (2021, December 17). A 1-figure Gauteng update, bringing in data through Wednesday 15/12 (PCR only; by date of collection). The turn continues. On similar metrics (not shown) ALL northern provinces (NW, GT, MP, LP) seem to have now turned. Https://t.co/6Bh3kZsooK [Tweet]. @tomtom_m. https://twitter.com/tomtom_m/status/1471723711287996416

Jay Varma. (2021, December 16). Um, we’ve never seen this before in #NYC. Test positivity doubling in three days 12/9—3.9% 12/10—4.2% 12/11—6.4% 12/12—7.8% Note: Test % is only for PCR & NYC does more per capita daily than most places ~67K PCR/day + 19K [reported] antigen over past few days (1/2) https://t.co/PhxsZq55jn [Tweet]. @DrJayVarma. https://twitter.com/DrJayVarma/status/1471485885447389186

Carl Zimmer. (2021, December 15). Connecticut has gone practically vertical https://nytimes.com/interactive/2021/us/covid-cases.html?referringSource=articleShare https://t.co/mBlybyTpAA [Tweet]. @carlzimmer. https://twitter.com/carlzimmer/status/1470986172583317506

Wilhelm, A., Widera, M., Grikscheit, K., Toptan, T., Schenk, B., Pallas, C., Metzler, M., Kohmer, N., Hoehl, S., Helfritz, F. A., Wolf, T., Goetsch, U., & Ciesek, S. (2021). Reduced Neutralization of SARS-CoV-2 Omicron Variant by Vaccine Sera and monoclonal antibodies (p. 2021.12.07.21267432). https://doi.org/10.1101/2021.12.07.21267432

Theo Sanderson. (2021, December 16). 71.9% of cases in London with specimens from 13 December were Omicron. Overall London cases are already reaching the maximum values ever seen in the pandemic. Https://t.co/CJF5kQqBpl [Tweet]. @theosanderson. https://twitter.com/theosanderson/status/1471537690650812420

COVID news live: Record number of boosters given out for second day - as Whitty predicts Omicron wave will ‘peak quite fast’. (n.d.). Sky News. Retrieved 17 December 2021, from https://news.sky.com/story/covid-news-live-professor-chris-whitty-to-be-questioned-by-mps-on-omicron-as-a-million-could-be-isolating-with-covid-on-christmas-day-12469075

Vaccination among the pregnant lagging despite growing evidence of safety and efficacy. (2021, December 10). Healthy Debate. https://healthydebate.ca/2021/12/topic/vaccination-pregnant-safe-efficacy/

Proposal to split B.1.1.529 to incorporate a newly characterised sibling lineage · Issue #361 · cov-lineages/pango-designation. (n.d.). GitHub. Retrieved 17 December 2021, from https://github.com/cov-lineages/pango-designation/issues/361

ReconfigBehSci. (2021, December 14). RT @AlastairGrant4: R-value for Omicron across England is currently 5.5 (C.I 4.7-6.4) Doubling time 2.04 days (CI 1.87—2.23) 22% of TaqPa… [Tweet]. @SciBeh. https://twitter.com/SciBeh/status/1470954045242494983

Topol, E. (2021, December 16). Why Paxlovid is a Just-in-Time Breakthrough [Substack newsletter]. Ground Truths. https://erictopol.substack.com/p/why-paxlovid-is-a-just-in-time-breakthrough

Mallapaty, S., Callaway, E., Kozlov, M., Ledford, H., Pickrell, J., & Van Noorden, R. (2021). How COVID vaccines shaped 2021 in eight powerful charts. Nature. https://doi.org/10.1038/d41586-021-03686-x

Garcia-Beltran, W. F., Denis, K. J. S., Hoelzemer, A., Lam, E. C., Nitido, A. D., Sheehan, M. L., Berrios, C., Ofoman, O., Chang, C. C., Hauser, B. M., Feldman, J., Gregory, D. J., Poznansky, M. C., Schmidt, A. G., Iafrate, A. J., Naranbhai, V., & Balazs, A. B. (2021). MRNA-based COVID-19 vaccine boosters induce neutralizing immunity against SARS-CoV-2 Omicron variant (p. 2021.12.14.21267755). https://doi.org/10.1101/2021.12.14.21267755

Maxmen, A. (2021). Omicron blindspots: Why it’s hard to track coronavirus variants. Nature. https://doi.org/10.1038/d41586-021-03698-7

Dr Duncan Robertson. (2021, December 15). Cases on the dashboard exclude reinfections.And there are a lot of reinfections as far as Omicron is concerned h/t @AlistairHaimes and @Peston And this is only cases reported today—Not from infections today With a 2-day doubling time for Omicron, this isn’t great https://t.co/fU2RLhshtn [Tweet]. @Dr_D_Robertson. https://twitter.com/Dr_D_Robertson/status/1471156538681315336

Boffey, D. (2021, December 15). Omicron likely to accelerate death toll in Europe, says health agency. The Guardian. https://www.theguardian.com/world/2021/dec/15/omicron-covid-likely-accelerate-death-rate-europe-eu-health-agency

Covid: UK reports highest daily cases since the pandemic began. (2021, December 15). BBC News. https://www.bbc.com/news/uk-59673150

NSW could have 25,000 COVID-19 cases per day by next month, modelling suggests. (2021, December 14). ABC News. https://www.abc.net.au/news/2021-12-15/nsw-covid-19-infections-reach-three-month-high-1360-new-cases/100700866

Carl T. Bergstrom. (2021, November 26). I’d be careful not to overinterpret the following graph from @jburnmurdoch. Yes, the fraction of B.1.1.529 is increasing faster. But I think that is that is largely due to different denominators. Https://t.co/NDhSqJpLlw [Tweet]. @CT_Bergstrom. https://twitter.com/CT_Bergstrom/status/1464061037292883970

NSW Health. (2021, November 28). OMICRON VARIANT CONFIRMED IN NSW CASES https://t.co/s0Z4hWYsSH [Tweet]. @NSWHealth. https://twitter.com/NSWHealth/status/1464837049291186180