One COVID vaccine dose yields good protection in elderly, 2 studies find – CIDRAP Original study 1: Vaccine effectiveness of the first dose of ChAdOx1 nCoV-19 and BNT162b2 against SARS-CoV-2 infection in residents of long-term care facilities in England (VIVALDI): a prospective cohort study – The Lancet Infectious Diseases Original Study 2: Effectiveness of BNT162b2 […]

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