We conducted a phase 2–3 double-blind trial to assess the efficacy and safety of nirmatrelvir–ritonavir in asymptomatic, rapid antigen test–negative adults who had been exposed to a household contact ...

The FDA has approved the first and only pill to prevent COVID-19 after exposure to the virus. Here's how it works. (Photo: ...

In the time warp that COVID-19 created in most of our lives, it's hard to believe it's been five years since any of us first heard of a mysterious illness making people sick in China. But it was Dec.

Despite frequent mentions of scientific evidence, U.S. media largely ignored uncertainties and relied on non-experts, fueling public confusion during the early COVID-19 crisis. In a recent study ...