Federal regulators say samples of pasteurised milk from around the United States have tested positive for inactive remnants of the bird flu virus that has.
H5N1, an avian flu virus, has killed tens of thousands of marine mammals, and infiltrated American livestock for the first time. Scientists are working.
Bird flu outbreaks among dairy cows in multiple American states, and at least one infection in a farm worker in Texas, have incited fears that the virus may.