Over the weekend, Oklahoma became the 31st state to confirm avian flu in chickens, State Impact, the Oklahoma consortium of public radio stations, reported. Also over the weekend, 19,000 ducks on seven farms in Lancaster County, Pennsylvania had to be killed in hopes of containing the disease, WGAL said.
As of Monday, 35 million birds in the U.S were reported to have died or been killed due to the flu, the second-worst spread of the disease in history, Reuters reported. France has culled 16 million birds and the disease has also occurred in Britain, Italy and Spain.