ATLANTA – About 1 in 5 U.S. children had a flu-like illness earlier this month — and most of those cases likely were swine flu, according to a new government health survey. About 7 percent of surveyed ...

(CNN) -- Pigs at family-friendly fairs are responsible for infecting children with a type of swine flu not previously seen in humans, according to a report published by Thursday by the US Centers for ...

Viral mismatch between circulating strains and vaccine may have weighed down effectiveness ...

Flu season is off to a rough start this year, according to the Centers for Disease Control and Prevention. While the virus arrived as expected, cases are rising faster, compared with previous years.