RT @Eurosurveillanc: @ECDC_Flu @ECDC_EU @NLZOH_si @ciberinfec @sciencemedia_es What was the #VaccineEffectiveness against severe #COVID19 of a second booster dose of the bivalent #mRNA vaccine, relative to a first booster dose of a monovalent #vaccine among persons ≥60 years?

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@istsupsan @s_brusaferro
https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2023.28.8.2300105#html_fulltext

🐦🔗: https://n.respublicae.eu/ECDC_EU/status/1629055784079224837