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FDA Is Reviewing Data on Mixing and Matching Boosters, Fauci Says

Anthony Fauci
Anthony Fauci

Photographer: Anna Moneymaker/The New York Times/Bloomberg

Data that may show the safety and effectiveness of mixing and matching boosters of different Covid-19 shots are under review by U.S. regulators, presidential adviser Anthony Fauci said.

A study of adults who received booster doses of different Covid-19 vaccines than their original shots has been completed, Fauci said in an interview on Bloomberg Television’s “Balance of Power with David Westin,” and the data have been presented to the U.S. Food and Drug Administration. The National Institutes of Health study looked at the safety, immunogenicity and efficacy of mixing and matching of the three U.S. authorized vaccines for booster purposes.