Bird flu has ripped through America’s poultry flocks and dairy herds — and it has infected humans. Tune in Sunday to learn how the U.S. is grappling with the virus. | 60 Minutes

One year ago, the first bird flu infection in a human in the United States was reported in a Texas dairy worker, just weeks after the virus had been found in cattle for the first time ever. To understand what’s going on and how to stop this outbreak our ABCNEWS team was given unprecedented access to biosecurity labs and quarentine sites where animals are isolated - all attempting to curb this pandemic among animals. More tonight on @abcnewslive #birdflu | Darien Sutton