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  2. Sep 2, 2022 · The U.S. Food and Drug Administration has authorized updated COVID booster shots that target the Omicron BA.4 and BA.5 subvariants. Here’s what experts know

  3. Jan 21, 2022 · Vaccine effectiveness was dramatically reduced during the omicron wave vs. the delta wave, but vaccines are still the best tool at preventing COVID infection, the CDC found -- and boosters...

    • Jennifer Millman
    • 8 min
  4. Mar 18, 2022 · Fourth dose of COVID vaccine offers only slight boost against Omicron infection How well can Omicron evade immunity from COVID vaccines? Three, four or more: what’s the magic number for...

  5. Aug 19, 2022 · Those data suggest that the inclusion of BA.1 sequences boosts neutralization of Omicron by about twofold 1, 2, but it’s unclear how much, if any, extra protection against illness this will...

    • Heidi Ledford
  6. Nov 4, 2022 · Medscape Medical News © 2022. Cite this: COVID Bivalent Booster Better vs Recent Omicron Subvariants: Pfizer - Medscape - Nov 04, 2022. The first human data at 1 month after a bivalent...

  7. Oct 13, 2022 · Oct 13 (Reuters) - Pfizer (PFE.N) and its German partner BioNTech said their COVID-19 vaccine booster, adapted for the BA.4 and the BA.5 subvariants of Omicron, generated a strong immune...

  8. Jun 14, 2023 · One of the antibodies created by the Omicron-targeted booster was effective against a subvariant of Omicron that emerged after the Omicron booster had been developed. Why is this research important?

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