- Explainer: How does Merck’s COVID-19 pill compare to Pfizer’s?Reuters
- Pfizer says its experimental pill reduces risk of hospitalization, death from Covid-19CNN
- Why did Merck shares fall today?Seeking Alpha
- Wicked Big Pharma Strikes AgainNational Review
- Covid: Pfizer says antiviral pill 89% effective in high-risk casesBBC News