Incidence of SARS-CoV-2 infection according to baseline antibody status in staff and residents of 100 LTC facilities

SARS-CoV-2 infection represents a major challenge for long-term care facilities (LTCFs) and many residents and staff are seropositive following persistent outbreaks. We aimed to investigate the association between the SARS-CoV-2 antibody status at baseline and subsequent infection in this population.