Incidence risk and cumulative risk of COVID-19 infection among healthcare workers over the first year of the pandemic

Objectives: To analyze the spread rate and the cumulative risk of COVID-19 infection among healthcare workers (HCWs) over the first year of the pandemic. Method: An online, cross-sectional study involved HCWs who were in-service during the first year of COVID-19 crisis, including all healthcare institutions of Jeddah. History and date of COVID-19 infection were collected to estimate the COVID-19-free time, by reference to 03 March 2020, when the first case in Saudi Arabia was identified. Kaplan-Meier survival and Cox regression methods were used to analyze the cumulative risk of COVID-19 infection and the associated factors.