Durability of SARS-CoV-2 IgG Antibody Among Residents in a Long-Term Care Community

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of coronavirus disease 2019 (COVID-19), has spread rapidly around the world since first identified in Wuhan, China, in December 2019.1 Long-term care residents have been among the hardest impacted by COVID-19. More than 500,000 residents in nursing homes and long-term care facilities have been infected in the United States, accounting for 40% of the total deaths from COVID-19.2 Among survivors, an understanding of the expected durability of the antibody response may be helpful in estimating the risk of a new infection.