MOSCOW, May 8 (UPI) -- Russian scientists say they're aiding the U.S. Centers for Disease Control and Prevention in developing a vaccine against the H1N1 flu virus.
GENEVA, Switzerland, May 6 (UPI) -- Forty-one U.S. states reported 642 confirmed cases of H1N1 flu infections, including two deaths, the Centers for Disease Control in Atlanta said.
ATHENS, Greece, May 4 (UPI) -- British pop singer Tulisa Contostavlos was being tested for swine flu after she fell ill on a flight from England to Greece, her manager said.
WASHINGTON, May 2 (UPI) -- At least 434 U.S. schools in 18 states were closed Friday to prevent the spread of the swine flu, forcing 245,000 students to stay home, officials said.
BEIJING, April 30 (UPI) -- Chinese government officials called reports that the H1N1 swine flu outbreak originated in China baseless.
MEXICO CITY, April 30 (UPI) -- Health officials say they're trying to unravel the riddle of why all but one of the 153 deaths in the swine flu outbreak occurred in Mexico.
GENEVA, Switzerland, April 29 (UPI) -- The World Health Organization Wednesday raised its swine flu alert to phase 5, saying influenza pandemics must be taken seriously.
LONDON, April 29 (UPI) -- Health officials in Britain have announced plans to send information leaflets about swine flu to each of 25 million households.
ATLANTA, April 28 (UPI) -- The number of suspected and confirmed swine flu cases climbed worldwide Tuesday as health officials work against the flu believed to be spreading from Mexico.
HOUSTON, April 28 (UPI) -- Six cases of swine flu have been confirmed in Texas with at least another 27 cases awaiting confirmation, state health investigators said.