Yasin Abul, Clare Nugent, Igor Vishnepolskiy, Tiffany Wallace, Evan Dickerson, Laurel Holland, Iva Esparza, Mandi Winkis, Kazi Tanvee Wali, Philip A Chan, Rosa R Baier, Amy Recker, Matthew Kaczynski, Shreya Kamojjala, Alexander Pralea, Hailee Rice, Olubunmi Osias, Oladayo A Oyebanji, Olajide Olagunju, Yi Cao, Chia Jung Li, Alex Roederer, Walther M Pfeifer, Christopher L King, Jurgen Bosch, Aman Nanda, Lynn McNicoll, Nadia Mujahid, Sakeena Raza, Rohit Tyagi, Brigid M Wilson, Elizabeth M White, David H Canaday, Stefan Gravenstein, Alejandro B Balazs
BACKGROUND: SARS-CoV-2 vaccination has reduced hospitalization and mortality for nursing home residents (NHRs). However, emerging variants coupled with waning immunity, immunosenescence, and variability of vaccine efficacy undermine vaccine effectiveness. We therefore need to update our understanding of the immunogenicity of the most recent XBB.1.5 monovalent vaccine to variant strains among NHRs. METHODS: The current study focuses on a subset of participants from a longitudinal study of consented NHRs and HCWs who have received serial blood draws to assess immunogenicity with each SARS-CoV-2 mRNA vaccine dose...
March 29, 2024: medRxiv