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

1 day 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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Bivalent booster cuts risk of XBB.1.5 symptomatic infection by about half

Bivalent booster cuts risk of XBB.1.5 symptomatic infection by about half

1 day ago   |   By Politico

A new CDC study has found that the Covid-19 bivalent booster reduces the risk of symptomatic infection from the most common subvariant circulating in the U.S. right now by about half. Additional new data, set to be published on the CDC website on Wednesday, also shows that individuals who received an updated vaccine reduced their risk of death by nearly 13 fold, when compared to the unvaccinated, and by two fold when compared to those with at least one monovalent vaccine but no updated booster. CDC officials said during a briefing on Wednesday that the new findings were "reassuring." But...
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