Pfizer begins Phase 2/3 study for COVID-19 oral antiviral in exposed adults
https://healthell.blogspot.com/2021/09/pfizer-begins-phase-23-study-for-covid.html
Pfizer begins Phase 2/3 study for COVID-19 oral antiviral in exposed adults

Pfizer initiated a Phase 2/3 study of an investigational oral antiviral with a low dose of ritonavir to prevent COVID-19 illness, the company announced Monday.