Support WBURBird Flu Flies Again, Prompting UN AdvisoryScott HensleyAugust 29, 2011 ShareWorkers at the Jurong Bird Park in Singapore catch flamingos last year as part of a drive to vaccinate them against avian flu. (AFP/Getty Images)
Workers at the Jurong Bird Park in Singapore catch flamingos last year as part of a drive to vaccinate them against avian flu. (AFP/Getty Images)