The updated Covid vaccines from Pfizer, Moderna and Novavax still need green lights from the FDA and the CDC before they roll out to the public.
The arrival of updated vaccines offers some reassurance to Americans as the U.S. sees a slight uptick in Covid cases and hospitalizations. But those metrics remain below the summer peak that strained hospitals last year, the CDC official noted.
But it's unclear how well the new shots will protect against another new omicron strain of the virus called BA.2.86, which has been identified in a very small number of cases in the U.S., U.K., Denmark and Israel.
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