Vaccines’ protection against virus infection is waning, C.D.C. studies suggest.

Some scientists pushed back, saying the new research does not indicate that all Americans need boosters, as federal officials have said.Some scientists pushed back, saying the new research does not indicate that all Americans need boosters, as federal officials have said.Coronavirus Delta Variant, Coronavirus (2019-nCoV), Disease Rates, Vaccination and Immunization, Centers for Disease Control and Prevention, Food and Drug AdministrationRead More

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