At least 245 new cases have been recorded, CDC data shows.

A particularly infectious subvariant of influenza is keeping emergency room numbers high and causing especially severe ...

California officials warn of an increase in flu-related hospitalizations and confirm a second severe-flu-related death.

The first three weeks of January in Arizona have been marked by measles cases and public exposures to the virus. Here's what ...

Respiratory illness cases peaked last year at 22% of emergency room visits. Influenza cases appear to be rising on a similar trendline. This story has been updated to add new information.

Influenza cases are on the rise in North Carolina, including the eastern part of the state, according to state and local authorities. According to the North Carolina Department of Health and Human ...

A strain of bird flu never seen in humans has infected a Washington state resident and left the person hospitalized, state health authorities said. Washington State Department of Health authorities ...

TRIAD — Respiratory virus infections, particularly the flu, have increased rapidly the past two weeks, and a Triad infectious disease expert recommends that people take precautions to avoid getting ...

A fourth child flu death has been reported in Massachusetts as new cases of the virus continue to surge, putting a strain on hospitals and urgent care centers statewide. The Boston Public Health ...