UPI in English  |   UPI Arabic  |   UPI en Español  |   UPIU

Extent of swine flu investigated

Published By United Press International
LONDON, Jan. 25 (UPI) -- A U.N. study said at least one-in-five people, including half of school-age children, were infected with swine flu in the first year of the pandemic in 2009.

A World Health Organization-led study analyzed data from 19 countries, searching for evidence of the body's immune system fighting the H1N1 virus. Researchers examined more than 90,000 blood samples collected before and during the pandemic from countries across the globe.

They said there was evidence of wide-spread infection, although they noted not all infected people would have developed full-on flu symptoms.

First detected in Mexico in 2009, H1N1 spread quickly around the world.

Fewer than two in every 10,000 people infected died during the pandemic, the researchers said.

"However, those that did die are much younger than in seasonal flu so the years of life lost will be much more," Dr. Maria Van Kerkhove from Imperial College London told the BBC.

"The figures drive home how incredibly infectious the virus is."

John Oxford, a virology expert at Queen Mary, University of London, agreed.

"It was the busiest virus on the block and it displaced other influenza viruses -- it was the only virus in town," he said.
© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.

Photo Gallery
1 of 1
Tour de France concludes in Paris
Race winner Bradley Wiggins of Great Britain (C) stands between second place finisher Christopher Froome of Great Britain (L) and third place finisher Vincenzo Nibali of Italy on the presentation podium following the final stage of the Tour de France in Paris on July 22, 2012. Wiggins of Great Britain became that country's first ever overall winner of the Tour de France. UPI/David Silpa