Samples of pasteurized milk on grocery store shelves have tested positive for remnants of the bird flu virus that has already infected herds of dairy cows‚ the U.S. Food and Drug Administration (FDA) said Tuesday. The FDA stressed that the material is inactivated and that the findings &;quot;do not represent [an] actual virus that may be a risk to consumers.&;quot; Officials added that they're continuing to study the issue. Bird flu virus‚ known as Highly Pathogenic Avian Influenza (HPAI) or...