September 10, 2020
High Seroprevalence of Anti-SARS-CoV-2 Antibodies in Chelsea, Massachusetts
Category: Article Summary
Topic: Testing and Treatment
Keywords (Tags): immunity, testing
• Among asymptomatic residents of Chelsea, Massachusetts without a prior positive PCR test for SARS-CoV-2 (n=200), the seroprevalence of SARS-CoV-2 antibodies was 32% (18% IgM+IgG+, 9% IgM+IgG-, and 5% IgM-IgG+), representing a substantial burden of undocumented infection. Additionally, 51% of participants reported no symptoms in the preceding 4 weeks, of whom 25% (25/101) were seropositive, and 60% of these were IgM+IgG-.
Naranbhai et al. (Sept 9, 2020). High Seroprevalence of Anti-SARS-CoV-2 Antibodies in Chelsea, Massachusetts. The Journal of Infectious Diseases. https://doi.org/10.1093/infdis/jiaa579