Here are some things to know.
This August 2022 photo provided by Pfizer shows vials of the company's updated COVID-19 vaccine during production in Kalamazoo, Mich. U.S. regulators have authorized updated COVID-19 boosters, the first to directly target today's most common omicron strain. The move on Wednesday, Aug. 13, 2022, by the Food and Drug Administration tweaks the recipe of shots made by Pfizer and rival Moderna that already have saved millions of lives. .
“If you wait a little more time, you get a better immunologic response,” said CDC adviser Dr. Sarah Long of Drexel University. The CDC has long told people to defer vaccination until they’ve recovered but also that people may consider waiting for three months after recovering to get a vaccination. And several CDC advisers say waiting the three months is important, both for potentially more benefit from the shot and to reduce chances of a rare side effect, heart inflammation, that sometimes affects teen boys and young men.That’s not clear, because tests of this exact recipe have only just begun in people.
Most Americans eligible for an updated booster have gone at least six months since their last shot, according to the CDC — plenty of time that another shot should trigger a good immune response.
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