COVID-19

A5401/ACTIV-2: Adaptive Platform Treatment Trial for Outpatients With COVID-19 (Adapt Out COVID)

A5404: SARS-CoV-2 Immune Responses After COVID-19 Therapy and Subsequent Vaccine

Efficacy of Hydroxychloroquine for Post-exposure Prophylaxis (PEP) to Prevent Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection Among Adults Exposed to Coronavirus Disease (COVID-19): a Blinded, Randomized Study