924. Incidence of Symptomatic and Asymptomatic Influenza Among Healthcare Workers: A Multicenter Prospective Cohort Study

Background Influenza is an important cause of viral nosocomial infections; however, the incidence of asymptomatic influenza among healthcare workers (HCWs) is poorly known. The objective was to estimate the cumulative incidence of asymptomatic and symptomatic influenza among HCWs.