US Hospitalized Adult Influenza Vaccine Effectiveness Network (HAIVEN)

This CDC-funded study conducts active surveillance for acute viral respiratory illness among adults hospitalized across four study centers in the US (active since 2015). The University of Michigan team works in conjunction with the CDC to conduct this study in three hospitals in southeast Michigan. For the COVID-19 pandemic, this team will be collecting in-depth data on the clinical course and outcomes of hospitalized patients with COVID-19 for national-level analyses led by CDC.