The U.S. Food and Drug Administration (FDA) announced on Thursday, April 25, that one in five commercial milk samples tested in a nationwide survey contained particles of the H5N1 virus. The announcement suggests that the outbreak of bird flu might have deeply penetrated the dairy industry across the United States. Dr. Michael Osterholm, an infectious disease expert at the University of Minnesota, said that the finding is significant, stating that the virus appears to have “saturated” dairy cattle through the country. Samuel Alcaine, an associate professor of food science at Cornell University, echoed Osterholm’s sentiment, saying that the virus’s discovery…