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Sep 1, 2023 · Omicron and its subvariants have ranked as the predominant SARS-CoV-2 strains in the U.S. for almost two years now. While the original Omicron strain (BA.1) is no longer circulating, Omicron subvariants are now driving most of the country’s SARS-CoV-2 infections.
- kathy.katella-cofrancesco@yale.edu
Nov 15, 2023 · In late 2023, the World Health Organization listed nine variants as circulating at the time. More than 50 variants have been identified; although some are no longer spreading. COVID variants of...
- Pfizer-Biontech Vaccine
- Moderna Vaccine
- Johnson & Johnson Vaccine
- Other Covid-19 Vaccines
Large-scale clinical trials of the Pfizer-BioNTech vaccine found a vaccine effectiveness of 95 percentagainst the original version of the new coronavirus. This vaccine is currently authorized for emergency use in the United States. A recent study investigated the effectiveness of this vaccine for test viruses containing the mutations found in B.1.3...
The large-scale clinical trials on the Moderna vaccine determined that vaccine effectiveness was 94.1 percentagainst the original version of the new coronavirus. Like the Pfizer-BioNTech vaccine, the Moderna vaccine has been authorized for emergency use in the United States. A recent study looked into the effectiveness of the Moderna vaccine for th...
The Johnson & Johnson vaccineis the third COVID-19 vaccine to be authorized for emergency use in the United States. Unlike the Pfizer-BioNTech and Moderna vaccines, it only requires one dose. This vaccine has yet to be tested against specific variants. However, large-scale clinical trials were performed in places where variants are circulating, suc...
What about some of the other COVID-19 vaccines around the world? How effective are they against the new coronavirus variants? A recent publication from the British Medical Journal (BMJ)summarizes what we know so far about different COVID-19 vaccines and the more widespread variants. Here’s what’s known so far about their effectiveness: 1. Oxford/As...
Aug 8, 2023 · By mid-March 2022, omicron was the dominant coronavirus variant in the world, accounting for 99.9% of coronavirus genome sequences from recent COVID-19 cases in the global database GISAID....
Apr 8, 2022 · Alpha, beta, gamma, delta and omicron variants of the SARS-CoV-2 coronavirus are classified as variants of concern. A variant of high consequence is a variant for which current vaccines do not offer protection. As of now, there are no SARS-CoV-2 variants of high consequence.
May 24, 2021 · 24 May 2021. What scientists know about new, fast-spreading coronavirus variants. Key questions remain about how quickly B.1.617 variants can spread, their potential to evade immunity and how...
Jan 6, 2021 · 6 January 2021. By Helen Briggs,BBC science correspondent. Getty Images. The rapid spread of coronavirus variants has put the world on alert and triggered a new lockdown in the UK. What are...
