Aerosols lingering in the air could be a major source of COVID-19 transmission, a group of U.S. scientists warned in an unrelated open letter published in medical journal Science on Monday.

Research around wildfire smoke has drawn links with diseases of the heart and lungs. Wildfires can also have mental health effects.

For decades, U.S. life expectancy was on the upswing, rising a few months nearly every year. Now it’s trending the other way.

Thomas Frieden, who also is a former New York City health commissioner, is charged with forcible touching, sex abuse and harassment.

Miami-Dade County has the most confirmed infections in Florida so far - 88, but all have been found to be travel-related.

Chlorination and filtration systems were inadequate at the U.S. National Whitewater Center, where a rafter became infected with a deadly amoeba, a federal health official said Thursday.

In a warning that's sure to disappoint many who enjoy sneaking a taste of cookie dough, federal regulators said this week that people should not eat raw dough or batter of any kind due to an ongoing outbreak of illnesses related to a strain of E. coli bacteria found in some recalled flour.

The government urged health officials around the country Friday to get ready now in case there are outbreaks of the mosquito-borne Zika virus in the U.S. this summer.

An outbreak of infection has sickened 53 people in Wisconsin and Michigan and 17 people have died, according to health officials.

There are now three dead in the U.S. linked to an outbreak of salmonella found in field cucumbers.