International Registry of Healthcare Workers Exposed to COVID-19 Patients (UNITY Global)

This is a comparative observational cohort study; therefore, no preventive interventions, visits or laboratory tests are mandated. Dosing and duration of potential prophylactic treatment is at the discretion of the institution and/or healthcare provider, in accordance with regular local practice. However, serology testing for SARS-CoV-2 antibodies will be offered to the first 50% of participating HCWs per country, at enrollment and at the last follow-up (i.e. at Week 12)