• The Bivalent Booster Protects Against New COVID-19 Variants, New Data Show

    6 days ago - By Time

    The Omicron variant has morphed into more than half a dozen different strains-the latest of which include BQ.1.1 and XBB.1, and XBB.1.5. Combined, these variants and their close relatives now account for nearly 90% of new COVID-19 infections in the U.S.
    But so far, no COVID-19 vaccine directly targets them. Instead, the latest bivalent formulation of the booster was designed against the Omicron variants BA.4 and BA.5, which are no longer widely circulating.
    So how well does it protect against the newer ones?
    The first look at a vaccine's effectiveness generally comes from lab-based data...
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