Even a mild case of COVID-19 or the flu can impact the body long after the fever and cough fade, according to new Tulane University research that may help explain why some people struggle to feel ...

Updated 2024-2025 COVID-19 vaccines significantly reduced the risk for hospitalization and severe outcomes despite the emergence of new viral lineages.

The World Health Organization (WHO) today announced recommendations for the viral composition of influenza (or "flu") vaccines for the 2026-2027 northern hemisphere influenza season. The announcement ...

A lethal form of bird flu, which has already killed tens of thousands of elephant seals in the Southern Hemisphere, is now spreading in a colony of elephant seals in California, scientists announced ...

New York state is seeing the highest number of flu cases ever recorded in a single week, according to the state Department of Health. Health officials reported 71,123 positive flu cases during the ...