MERS can be deadly—here's what you need to know.
Flu cases are increasing across the United States. Doctors explain what you need to know and how to help avoid the hospital.
Is an "immune deficit" to blame?
Learn what symptoms are sending people to the ER this flu season and how to stay healthy.
Studies revealed that patients with severe COVID-19 share some of the key traits of chronic autoimmune diseases.
Researchers discovered the worst COVID offenders.
Here's why mask mandates might return.
"There's no question there are certain groups of Americans at higher risk."
A test is the only way to know for sure if you've had COVID, but there are signs that indicate you've had the virus.
Experts explain what to know about long COVID and signs that indicate you have it.
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