Efetividade relativa e de curto prazo de 4 doses vs. 3 doses de vacina BNT162b2 em pessoas com 60 anos de idade ou mais em Israel: estudo retrospectivo, de caso-controle teste negativo.

Short term, relative effectiveness of four doses versus three doses of BNT162b2 vaccine in people aged 60 years and older in Israel: retrospective, test negative, case-control study – The BMJ

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