mixandmatch

The Food and Drug Administration seems likely to allow Americans to switch vaccines when choosing a Covid-19 booster shot. That authorization, which could come this week, is the latest development in a long-running debate over whether a…

People who received a first dose of the Oxford-AstraZeneca COVID-19 vaccine followed by an mRNA vaccine shot had a lower risk of infection compared to those immunised with both doses of the AstraZeneca preventive, according to a nationwide…

President Joe Biden’s chief medical adviser said he expects US regulators to consider whether people who got the one-dose Johnson & Johnson vaccine should get an mRNA shot against Covid-19 as a booster.…

<!-- -->Mixing-and-matching vaccines could make it easier for officials to roll out boosters more broadly.Mixing Covid vaccines produces as much or more antibodies as using the same shot as a booster, according to preliminary results…

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, gives an opening statement during a Senate Health, Education, Labor and Pensions Committee hearing to discuss the on-going federal response to…

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