Testing effectiveness (Phase 2)WithdrawnNCT05545319
What this trial is testing
Learn About the Medicine Called Nirmatrelvir Used in Combination With Ritonavir in People With Weakened Immune Systems or at Increased Risk for Poor Outcomes Who Are Hospitalized Due to Severe COVID-19
Who this might be right for
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)Coronavirus Disease 2019 (COVID-19)Immunocompromised+2 more
Pfizer