https://www.siliconvalley.com/2021/10/01/merck-says-pill-cuts-risk-of-covid-19-hospitalization-death-in-half-as-many-states-see-vaccinations-increase/ > A pill has cut the risk of hospitalization or death from Covid-19 by half in a study, Merck and Ridgeback Therapeutic said Friday. > It would become the first oral antiviral for Covid-19 if approved by the US Food and Drug Administration for emergency use authorization.