CNN Health

When students at Queen's Grant High School in Matthews, North Carolina, return to class in late August, they'll notice a purple glow emanating from the vents as they walk down the hallway. The charter school has installed UV lights into its HVAC systems as part of an effort to eliminate viruses and other bacteria in the air.

Read CNN's Fast Facts to learn about listeriosis, a serious infection generally caused by eating food contaminated with the bacterium Listeria monocytogenes.

Read CNN's Fast Facts on Mad Cow Disease and learn more about the transmissible fatal brain disease found in cattle.

Read Hoof-and-Mouth Disease Fast Facts at CNN and learn more about this communicable viral disease affecting cows, pigs and other cloven-hooved animals.

Read Fast Facts from CNN about the H1N1 influenza virus, also known as swine flu. There was a global outbreak which lasted from 2009 to 2010.

Today, CNN Chief Medical Correspondent Dr. Sanjay Gupta talks to Dr. Nick Boulis about what was it was like to work inside Emory University's Covid-19 ICU unit and watch the deadly power of this disease firsthand.

Read CNN's E. Coli Outbreaks Fast Facts and learn more about the bacteria that can contaminate food.

In the search to find a vaccine to put an end to the coronavirus pandemic, some scientists worry that President Trump's "Operation Warp Speed" is missing out on tried and true vaccine technologies that have over and over again resulted in proven winners.

Youth sports are coming off the sidelines as states begin to reopen.

As states move forward with relaxing virus-compelled restrictions -- and as people grow weary of complying with them -- some areas are reporting a record number of new daily cases.

A group of 16 friends all tested positive for coronavirus after a night out at a recently reopened Florida bar.

Misha Garnier's 14-year-old son, Lino, is playing a lot of video games right now.

Carol Kochon prayed during her husband's 42-day hospitalization for Covid-19.

A South Dakota company expects to start human trials next month for a Covid-19 antibody treatment derived from the plasma of cows.

The first video game-based treatment for attention deficit hyperactivity disorder (ADHD) has been approved by the US Food and Drug Administration (FDA).

Have you ever experienced that distant feeling that people are around you but not with you? Loneliness might affect how our brains perceive people, a new study finds. Increased reports of loneliness due to social distancing has researchers concerned.

Last week, an official at the World Health Organization said asymptomatic transmission of the coronavirus appears to be rare. They've since clarified their remarks. CNN Chief Medial Correspondent Dr. Sanjay Gupta sets the record straight on who can transmit the virus.

The widely available steroid drug dexamethasone may be key in helping to treat the sickest Covid-19 patients who require ventilation or oxygen, according to researchers in the United Kingdom.

Pets might not infect people with coronavirus, but pet owners need to protect cats, dogs and other companion animals, the US Food and Drug Administration cautioned in a new YouTube video.