CNN Health

A sudden change in federal guidelines on coronavirus testing came this week as a result of pressure from the upper ranks of the Trump administration, a federal health official close to the process tells CNN.

Four overnight camps in Maine successfully identified and isolated three Covid-19 positive people with no symptoms, preventing transmission to more than 1,000 other campers and staff this summer, a new report says.

More than 70,000 new Covid-19 cases in children have been reported across the US since early August, new data shows.

In a shift that perplexed some doctors, the US Centers for Disease Control and Prevention has changed its Covid-19 testing guidelines to say some people without symptoms may not need to be tested, even if they've been in close contact with someone known to have the virus.

Researchers say they have evidence that a woman caught coronavirus on a flight -- perhaps in the jet's restroom.

Obesity increases the risk of contracting the coronavirus, of landing in the hospital and intensive care unit, and the risk of death from Covid-19, according to a new study from researchers at the University of North Carolina at Chapel Hill.

When Missouri art teacher Misty Byrd learned that the mother of one of her students needed a new kidney, she said she didn't even think about it -- she picked up the phone and offered hers. After a successful transplant and developing a close friendship, both women are now working to find a kidney for a local father who is waiting on the transplant list.

Blood thinners appear to reduce the risk of death by up to 50% among seriously ill, hospitalized Covid-19 patients, researchers say.

Nima Bhakta was that college friend who everyone knew would be a great mother.

While commercial labs across the country have pushed hard this year to scale up their coronavirus testing capacity, the number of tests they conduct each week has fallen over the last month.

Polio has been declared eradicated from Africa, the World Health Organization said Tuesday.

Even during the pandemic, life expectancy among Whites in the United States far exceeds what Blacks have experienced every year, according to new research.

More than 70 Covid-19 cases have now been linked to an event that drew thousands of tourists to a small South Dakota city earlier this month, CNN surveys of state health departments show.

If all goes according to plan, Penn State University students who opt for an on-campus experience this fall will start in-person classes this week under the banner of a "Mask Up or Pack Up" campaign.

In Part III of this five-part series, fitness expert Stephanie Mansour guides you in a routine that will get you out of your chair for improved movement and posture.

Amid pressure to decrease the number of coronavirus infections in Georgia, which are among the worst in the nation over the last two weeks, a spokeswoman for the governor pushed back on questions about a lack of progress made in combating Covid-19 in the state.

New Covid-19 cases in the US may be on the decline, but some officials across the heartland reported worrisome news this week.

One superspreading event may be connected to about 20,000 Covid-19 cases in the Boston area, a researcher said on Tuesday.

In an era of hypervigilance during a pandemic, whether some of our friendships will survive is up in the air.

It's been two and a half weeks since a wedding in Maine sparked an outbreak of the coronavirus among guests.