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Reduced humoral response 3 months following BNT162b2 vaccination in SARS-CoV-2 uninfected residents of long-term care facilities.

Macedonia TriguerosEdwards PradenasDolors PalacínFrancisco Muñoz-LópezCarlos Ávila-NietoBenjamin TrinitéJosep Maria Bonet-SimóMar IsnardNemesio MorenoSilvia MarfilCarla RovirosaTeresa PuigEulàlia GrauAnna ChamorroAna MartinezRuth ToledoMarta FontJordi AraJorge CarrilloLourdes MateuJulià BlancoBonaventura ClotetNuria PratMarta Massanellanull null
Published in: Age and ageing (2022)
although hybrid immunity seems to be active in previously infected older adults 3 months after mRNA/BNT162b2 vaccination, humoral immune responses are diminished in COVID-19 uninfected but vaccinated older residents of LTCF. These results suggest that a vaccine booster dose should be prioritised for this particularly vulnerable population.
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