Bird flu-infected cows have died in 5 states as experts closely monitor the disease [Video]

• Dairy cows infected with bird flu in five U.S. states have died or been slaughtered by farmers because they did not recover. The U.S. Department of Agriculture (USDA) says the vast majority of cows recover well.
• Bird flu infections lead cattle to suffer reduced milk production, digestive issues, fever, and diminished appetite, and can beget secondary infections that can be lethal.
• The USDA reported that no viral particles were found in samples of ground beef collected at retail stores, and that no bird flu virus was found after cooking ground beef to medium to well done after it was injected with a virus surrogate as part of an experiment.

Dairy cows infected with avian flu in five U.S. states have died or been slaughtered by farmers because they did not recover, state officials and academics told Reuters.

Reports of the deaths suggest the bird flu outbreak in cows could take …