Tracking bird flu: US wildlife workers on the front line against deadly strains

They were once featured on the show “Dirty Jobs” but the wildlife experts who spend weeks each year wrestling wild birds to swab their behinds for avian flu don’t mind. They’re happy to be on the front line, keeping an eye out for infected birds that might bring new and deadly strains of influenza to the United States.The program’s been dialed back a bit since it started in 2005, but the U.S. Geol...