The Pfizer, Moderna, and Johnson & Johnson vaccines are authorized in the US. (File)Washington: The US Food and Drug Administration (FDA) on Wednesday authorized using a so-called “mix and match” strategy for eligible people who require a booster shot of a Covid vaccine after their primary series.”The FDA has determined that the known and potential benefits of the use of a single heterologous booster dose outweigh the known and potential risks of their use in eligible populations,” the agency said in a statement.The Pfizer, Moderna, and Johnson & Johnson vaccines are authorized in the United States. A single dose of any of them may now be used following completion of primary vaccination with a different Covid vaccine.(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
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