Immune signature in vaccinated versus non-vaccinated aged people with COVID-19 pneumonia.
Ruggiero AlessandraCaldrer SaraPastori ClaudiaGianesini NatashaCugnata FedericaBrombin ChiaraFantoni TobiaTais StefanoRizzi EleonoraMatucci AndreaMayora-Neto MartinUberti-Foppa CaterinaTemperton NigelDi Serio Mariaclelia StefaniaLopalco LuciaPiubelli ChiaraPublished in: Journal of translational medicine (2024)
Administration of 3 vaccination doses reduces the severe symptomatology in aged and elderly. Vaccination showed a strong association with anti-SARS-CoV-2 humoral response and an expansion of Th2 T-cells populations, independently of age. Delta variants and number of vaccine doses affected the magnitude of the humoral response against the original SARS-CoV-2 and emerging variants. A systematic surveillance of the emerging variants is paramount to define future vaccination strategies.