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 ...

Now that avian influenza is circulating among dairy cattle in at least 12 states in the U.S. and has infected three dairy workers, health experts are keeping a close eye on whether people can be ...

WASHINGTON — Testing conducted by the Food and Drug Administration on pasteurized commercially purchased milk has found genetic evidence of the H5N1 bird flu virus, the agency confirmed Tuesday. But ...

Pasteurization, a long-practiced food processing method, has been at the center of a polarizing debate.