Analysis of contact tracing surveillance for COVID-19 among healthcare workers in secondary referral hospital, Indonesia [version 2; peer review: 1 approved]

Background: Healthcare workers (HCWs) are more vulnerable to COVID-19 infection. Tracing and screening cases among healthcare workers are essential to overcome the spread of COVID-19. We held surveillance at the second-referral hospital in Surabaya, Indonesia, to inspect the associating factors of infected HCWs. Methods: From 776 HCWs, we conducted a structured retrospective review of all COVID-19-confirmed HCWs and ones having contact with COVID-19 patients between February-July 2021. We associated general characteristics (i.e age, gender, working sites, etc) of the sample with the positive cases, analyzed the vaccination status, then did bivariate and multivariate regression logistic analyses to determine related factors putting HCWs at risk for COVID-19 infection. Results: Bivariate analysis significantly revealed that 72.86% patients had a close contact (OR = 2.61; p 15 minutes contact duration (90%; OR = 1.1; p