The Food and Drug Administration on Wednesday authorized booster doses of the Moderna and Johnson & Johnson COVID-19 vaccines, and also said it is fine to mix and match initial doses and boosters.
Under the emergency use authorization, a half dose of the Moderna vaccine can be given as a booster to people 65 and older who have been fully vaccinated for at least six months, as well as those 18 and older who are at high risk of severe COVID-19 or are frequently exposed to COVID-19 at their workplace. For the Johnson & Johnson booster, it may be administered to adults 18 and over, at least two months after they received their initial single dose of the vaccine.
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