In San Diego County, nearly 80 percent of 5- to 17-year-olds have not received this flu season’s vaccine, said interim public ...

Flu A and flu B are two different strains of influenza, explains Thomas Russo, M.D., professor and chief of infectious ...

Schools around the country are closing due to surges of flu and other illnesses which are sickening students and staff. Here's what parents need to know.

Illinois is seeing a "notable increase" in hospital admissions for flu cases, according to state health officials, as levels of respiratory viruses continue to tick up. But which type of flu is ...