WASHINGTON, Aug. 9 (UPI) -- The United States and other Northern Hemisphere countries are racing to get ready for a second wave of H1N1 flu virus that could be weeks away, officials said.

WASHINGTON, May 10 (UPI) -- The swine flu outbreak shows that the World Health Organization needs a better warning system to reflect the severity of epidemics, a U.S. doctor says.

WASHINGTON, Dec. 12 (UPI) -- Nearly half of all U.S. adults say they're not planning to get a flu shot this year, a RAND survey said.

WASHINGTON, April 27 (UPI) -- There has been a rise in the number of U.S. children who become infected with both influenza and Staphylococcus aureus, federal health experts say.

BETHESDA, Md., Feb. 28 (UPI) -- A U.S. non-profit group has announced a "call for action" in response to a study that says only 42 percent of healthcare personnel get a flu shot.

WASHINGTON, Jan. 11 (UPI) -- Many people miss the point about remedies and realities during the cold and flu season, doctors around the United States say. Doctors said a lot of common knowledge about colds and flu is grounded in myths, which spread as fast -- or faster -- than the vi

BALTIMORE, March 5 (UPI) -- Biologists are establishing an aggressive, $29 million early warning campaign as the deadly H5N1 strain of bird flu heads toward North America.

WASHINGTON, April 13 (UPI) -- Samples of a deadly strain of flu virus inadvertently sent to labs around the world have sparked concern about a major outbreak, but health authorities told United Press International such an event is unlikely to materialize.

WASHINGTON, Oct. 6 (UPI) -- Health authorities probably will not be able to salvage any of the millions of doses of influenza vaccine intended for the United States that were suspended by British officials in a surprise move Tuesday, experts familiar with the situation told United P