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On Tuesday, the U.S. Food and Drug Administration (FDA) amended the emergency use authorisations of the Moderna and Pfizer-BioNTech COVID-19 bivalent mRNA vaccines.
It, however, approved a second dose of the updated COVID-19 booster for older adults and people with weakened immune systems.
Those who are 65 and older can get a second dose of the updated versions of the Moderna and Pfizer-BioNTech booster at least four months following their initial bivalent dose, the FDA said in a statement.
According to the agency, most immunocompromised people can get an additional updated booster dose at least two months after their last dose.
It said most unvaccinated individuals might receive a single dose of a bivalent vaccine rather than multiple doses of the original monovalent mRNA vaccines.
According to the FDA, the monovalent Moderna and Pfizer-BioNTech COVID-19 vaccines are no longer authorised for use in the U.S.
(Xinhua/NAN)
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