Find out how different vaccines for the coronavirus cause your body to create antibodies that fight the virus.

The increased size of, and lesser blood supply to, a key brain structure in patients with long COVID tracks with known blood markers of Alzheimer's disease and greater levels of dementia, a new study ...

COVID-19 can cause a long list of health issues, including flu symptoms, respiratory problems and even organ damage, according to medical experts — but a new study suggests that the virus could have a ...

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COVID-19 is still killing more than 100,000 Americans a year, new Centers for Disease Control and Prevention (CDC) study shows—underscoring how the virus remains a major health threat even if the ...