Kislaya, IrinaNunes, BaltazarMachado, Ausenda2022-07-082022-07-082021-07-22http://hdl.handle.net/10400.18/8097This study aims to estimate the population-level impact of vaccination on incidence of SARS-COV-2 infection and COVID-19 hospital occupancy in a Portuguese population aged 80 years and over in early stage of mass vaccination campaign, controlling for effect of other non-pharmacological interventions. Our results suggest a reduction of the incidence and daily hospital occupancy in the target population supporting the implementation of the vaccination campaign in other population subgroups.engCOVID-19SARS-CoV-2COVID-19 VaccineVaccine ImpactEstados de Saúde e de DoençaDeterminantes da Saúde e da DoençaPortugalInfecções Respiratóriasconference object