Rising immunity and modest changes in behavior may explain why cases are declining, but much remains unknown, scientists say. After a brutal summer surge, driven by the highly contagious Delta variant, the coronavirus is again in retreat.
If nothing else, the Covid-19 virus has humbled experts who once confidently predicted its course, disregarding the lessons of history.
STAT looks at the unanswered questions about Merck's new Covid-19 drug, molnupiravir, and about other Covid-fighting pills in development.
A player-led process helped the league become the first in North American sports to reach the 99% milestone.
High-quality respirators such as N95s and K95s are now widely available and provide the best protection against COVID, according to experts. Why aren’t more people wearing them?
Viral evolution is a long game. Here’s where scientists think we could be headed.
An antiviral pill developed by U.S. drugmaker Merck & Co could half the chances of dying or being hospitalized for those most at risk of contracting severe COVID-19, with experts hailing it as a potential breakthrough in how the virus is treated.