Iowa reports biggest U.S. outbreak of bird flu in poultry

Iowa, the top U.S. egg-producing state, found a lethal strain of bird flu in a flock of millions of hens at an egg-laying facility on Monday, the worst case so far in a national outbreak that has now prompted Wisconsin to declare a state of emergency. The U.S. Department of Agriculture said the Iowa flock numbered 5.3 million birds while the company that operates the farm said it was 3.8 million. It was unclear why there was a discrepancy.  Read More