The FDA told vaccine makers to provide protection against the omicron strain, known as XBB.1.5.
FILE - Pfizer, left, and Moderna bivalent COVID-19 vaccines are readied for use at a clinic, Nov. 17, 2022, in Richmond, Va. The Food and Drug Administration on Friday, June 16, 2023, told COVID-19 vaccine makers to update fall shots to target the latest omicron strain. NEW YORK — The next round of COVID-19 vaccines will target one of the latest versions of the coronavirus, the Food and Drug Administration said Friday.
Today’s shots include the original coronavirus and an earlier version of omicron. They do still help prevent severe disease and death even as XBB variants have taken over. But protection gradually wanes over time and was short-lived against milder infection even before the virus, inevitably, evolved again.
The Centers for Disease Control and Prevention will eventually decide whether to recommend the shot for nearly all Americans or just for certain high-risk groups.
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