In the multivariate analysis, only the use of PPE (protective: OR, 0.56; 95% CI, 0.44–0.72; P < .001) and previous contact with COVID-19 patients (risk factor: OR, 1.69; 95% CI, 1.28–2.24; P < .001) were independent factors associated with SARS-CoV-2 infection, whereas type of contact (close vs casual) did not reach statistical significance ( P = .081).
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Severe acute respiratory coronavirus virus 2 (SARS-CoV-2) infection among hospital workers in a severely affected institution in Madrid, Spain: A surveillance cross-sectional study.
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0.0810
0.0810