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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.
- 065208055
- kathy.katella-cofrancesco@yale.edu
Nov 15, 2023 · How many variants are there? The number changes often. In late 2023, the World Health Organization listed nine variants as circulating at the time.
- 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...
Apr 8, 2022 · Will there be more new coronavirus variants? Yes. As long as the coronavirus spreads through the population, mutations will continue to happen, and the delta and omicron variant families continue to evolve. “New variants of the SARS-CoV-2 virus are detected every week,” Ray says.
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....
Jun 22, 2021 · Over the past month, infections have nearly doubled in most regions of the world, the W.H.O. said at a news briefing on Friday. “Much of this increase is being driven by the highly transmissible...
Sep 1, 2023 · The variant of the SARS-CoV-2 virus that causes COVID-19 first surfaced in the United States toward the end of 2021 and spread like wildfire, spawning new sub-strains—some more transmissible than others. Now, multiple Omicron subvariants are driving most of the COVID-19 cases in the United States.
