About a quarter of Americans who said in January they would definitely not get a Covid-19 vaccine—or do so only if required—have since received at least one shot of a vaccine, according to a new Kaiser Family Foundation survey. See where the vaccine-hesitant stand now in our interactive charts.

Surgeon General Vivek Murthy in a formal advisory on Thursday declared Covid-19 misinformation to be "an urgent threat to public health" and said tech companies aren't doing enough to stop its spread. Here's what's in the advisory—including three ways health care organizations can lead the fight against misinformation.

Ever since he was paralyzed by a severe stroke in 2003, a man known as Pancho has been unable to speak. Now, researchers at the University of California-San Francisco have developed a brain implant that translates his brain signals into words.

A new study finds that early infections with the delta variant carry 1,000 times the viral load of infections from previous versions of the coronavirus; what new lab research reveals about vaccines' effectiveness against the delta variant; and more in this week's roundup of Covid-19 news.

CDC data released Wednesday shows a record 93,331 drug overdose deaths occurred in 2020—an almost 30% increase from 2019, in today's bite-sized hospital and health industry news from Georgia, Ohio, and Oregon.

A look at whether marijuana should be considered a performance-enhancing drug; whether 10,000 steps a day is really necessary; and more.