US dairy cows are tip of the iceberg as bird flu spreads in mammals globally, says ecologist
Health authorities are working to gather information on the spread of the H5N1 virus, or bird flu, in U.S. dairy cows—the first confirmation of the virus in cattle. “We have moved into new territory,” says Thomas Gillespie, professor and chair of Emory University’s Department of Environmental Sciences. The dairy cow infections are simply the latest…