Primo caso di variante Omicron in Italia. L’Iss: «Identificata sequenza nel paziente positivo in Campania». (2021, November 27). Open. https://www.open.online/2021/11/27/covid-19-campania-caso-sospetto-variante-omicron/

Trevor Branch. (2021, November 28). countries banned because of the omicron variant vs. Countries with confirmed omicron cases https://t.co/7HAxx03KfE [Tweet]. @TrevorABranch. https://twitter.com/TrevorABranch/status/1464748201601159169

Sridhar, D. (2021, November 28). How bad will the Omicron Covid variant be in Britain? Three things will tell us. The Guardian. https://www.theguardian.com/commentisfree/2021/nov/28/omicron-covid-variant-britain-southern-africa

News, B. N. O. (2021, November 26). Tracking COVID-19 variant Omicron. BNO News. https://bnonews.com/index.php/2021/11/omicron-tracker/

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Cause for optimism on Omicron: Our immune systems aren’t blank slates. (2021, December 1). STAT. https://www.statnews.com/2021/12/01/a-reason-for-optimism-on-omicron-our-immune-systems-are-not-blank-slates/

Jorge A. Caballero, MD. (2021, December 3). #Omicron is sending more kids to the hospital than #Delta in South Africa https://t.co/bv5CxIag2u [Tweet]. @DataDrivenMD. https://twitter.com/DataDrivenMD/status/1466658311227404292

Kristian G. Andersen on Twitter. (n.d.). Twitter. Retrieved 3 December 2021, from https://twitter.com/K_G_Andersen/status/1465822536629821442

Paul Mainwood. (2021, November 29). @mroliverbarnes If it’s anything like Beta, then boosters should clobber it just fine. Https://t.co/LPX0GAXn1y [Tweet]. @PaulMainwood. https://twitter.com/PaulMainwood/status/1465263524104609792

Harrison, V. (2021, December 2). Omicron variant fuelling ‘exponential’ rise in Covid cases, say South Africa officials. The Guardian. https://www.theguardian.com/world/2021/dec/02/omicron-variant-fuelling-exponential-rise-in-covid-cases-say-south-africa-officials

Eric Feigl-Ding. (2021, December 2). A rise in possible #Omicron in England—Tripling (0.1 to 0.3) of S-Gene dropout PCR signal, which is a proxy for Omicron (before 🧬 sequencing confirms). @_nickdavies estimates this represents around ~60 cases in 🏴󠁧󠁢󠁥󠁮󠁧󠁿. Still early—But it displacing #DeltaVariant is not good sign. 🧵 https://t.co/4aIiqiVsqH [Tweet]. @DrEricDing. https://twitter.com/DrEricDing/status/1466234026843205637

COVID-19: Most Omicron cases are “mild” and there’s no evidence to suggest vaccines may be less effective against the variant, says WHO official. (n.d.). Sky News. Retrieved December 2, 2021, from https://news.sky.com/story/covid-19-most-omicron-cases-are-mild-and-theres-no-evidence-to-suggest-vaccines-may-be-less-effective-against-the-variant-says-who-12483729

nference. (2021, November 27). Here is how B.1.1.529 (#Omicron #B11529) compares to Alpha, Beta, Gamma, Delta variants. Omicron has highest novel Spike mutations including striking cluster on the “crown” suggesting significant selection pressure & antigenic distinction from prior strains (Credits: Nference) https://t.co/4oZQbjhbG8 [Tweet]. @_nference. https://twitter.com/_nference/status/1464404770098229250

Oliver Barnes. (2021, November 30). Presented without comment. #Omicron cc @jburnmurdoch https://t.co/SFGr0y8VlZ [Tweet]. @mroliverbarnes. https://twitter.com/mroliverbarnes/status/1465646339426033667

Sparrow, A. (2021, November 30). Boris Johnson says people should not cancel Christmas parties over Omicron – as it happened. The Guardian. https://www.theguardian.com/politics/live/2021/nov/30/uk-covid-omicron-threat-booster-vaccine-masks-boris-johnson-coronavirus-latest-updates

Tigress. (2021, November 30). Child Vaccinations England 30th November (Data to 29th) 16-17 59.4% 0.1% up on previous day 12-15 41.6% 0.2% up on previous day #coronavirus #COVID19 #SARSCoV2 [Tweet]. @TigressEllie. https://twitter.com/TigressEllie/status/1465757968444633090

Number of Omicron variant cases in Scotland rises to nine. (2021, November 30). The Independent. https://www.independent.co.uk/news/uk/humza-yousaf-nhs-omicron-scotland-lanarkshire-b1966636.html

N, P, & R. (2021, November 27). Does omicron pose a risk to the vaccinated? Too early to tell, epidemiologist says. NPR. https://www.npr.org/2021/11/27/1059539509/too-early-to-tell-whether-omicron-poses-a-threat-to-vaccinated-epidemiologist-sa

Reuters. (2021, November 29). First suspected case of Omicron variant of COVID-19 detected in Switzerland. Reuters. https://www.reuters.com/markets/europe/first-suspected-case-omicron-variant-covid-19-detected-switzerland-2021-11-29/