US health experts plan for bird flu pandemic 2005-07-28 HKT 09:05 US health experts are putting together a plan for dealing with a bird flu pandemic should one break out. The plan includes deciding who should be vaccinated and who should get antiviral drugs first. The H5N1 strain of avian flu has killed more than 50 people in Asia. Health experts fear it could kill millions around the world if it mutates into a form that could easily spread from person to person.