Alexander Tin is a digital reporter for CBS News based in the Washington, D.C. bureau. He covers federal public health agencies. A "small but detectable quantity" of infectious H5N1 bird flu virus was ...

New lab experiments with milk from cows infected by H5N1 influenza, known as bird flu, confirm that it is infectious, especially when left raw, or untreated, and potentially even when flash ...

Fragments of the virus that causes bird flu have been found in samples of pasteurized milk, the Food and Drug Administration said Tuesday, but officials aren't concerned about danger to humans from ...

Federal and state officials say pasteurized milk available in grocery stores is safe from bird flu but caution that raw milk is not. So how do you know what you're drinking is safe? The H5N1 bird flu ...