Table 2.

SARS-CoV-2 attack rate of healthcare workers with and without evidence of previous infection during periods of high SARS-CoV-2 prevalence

WardTotal exposed staffEvidence of previous infectionNo evidence of previous infectionEvidence of previous infection that tested positiveNo evidence of previous infection that tested positiveAttack rate – evidence of previous infection (%)Attack rate – no evidence of previous infection (%)
111017930110.011.8
2831667090.013.4
35020300190.063.3
4461828060.021.4
56914550200.036.4
611015950250.026.3
77015551146.725.5
Total53811542311040.8724.59