Antibody Status and Incidence of SARS-CoV-2 Infection in Health Care Workers – nejm.org

Baseline Anti-Spike IgG Assays and PCR Testing Rates
Table 1.
Table 1. Demographic Characteristics and SARS-CoV-2 PCR Testing for 12,541 Health Care Workers According to SARS-CoV-2 Anti-Spike IgG Status.A total of 12,541 health care workers underwent measurement of baseline anti-spike antibodies; 11,364 (90.6%) were seronegative and 1177 (9.4%) seropositive at their first anti-spike IgG assay, and seroconversion occurred in 88 workers during the study (Table 1, and Fig. S1A in the Supplementary…

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