The FDA appears poised to make available the COVID-19 vaccines that target omicron as a second booster for people with weak immune systems and those ages 65 and older.
have done, and what some vaccine specialists have been urging — especially with the ample of supply of vaccine available.
The main concern is the protection people got from their last shot has been fading, not just against getting infected but also possibly against getting seriously ill. So Hotez says people as young as 50 should be able to get a second bivalent booster if they want one. But others scientists aren't so sure. They say there just isn't any good evidence showing protection against serious illness has faded significantly or that getting another shot would help that much.
"The concern is that if we continue to give boosters against a virus that's not circulating when we do see the next variant you may not develop a vigorous immune response to that new viral variant," Poland says., and so the demand for another right now would probably be even lower.
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