In early February, dairy farmers in the Texas Panhandle began to notice sick cattle. The buzz soon reached Darren Turley, executive director of the Texas Association of Dairymen: “They said there is something moving from herd to herd.”
Nearly 60 days passed before veterinarians identified the culprit: a highly pathogenic strain of the bird flu virus, H5N1. Had it been detected sooner, the outbreak might have been swiftly contained. Now it has spread to at least eight other states, and it will be hard to eliminate.
