Merck said Friday that its drug is30% effective at preventing hospitalization and deathcaused by COVID-19.
This isdown from the company’s previous estimateof a 50% reduction of hospitalizations and death.
Pfizer has also asked the FDA to authorize its COVID-19 treatment pill, Paxlovid.
In clinical trials, Pfizer said its COVID-19 treatment pillreduces risk of hospitalization or death by 89%.