We know it’s in the environment, but this is the first time it’s been documented that D1.1 has been in a dairy cow. Director of the Nevada Department of Agriculture, Dr. J.J. Goicoechea, concerning a new strain of bird flu found in dairy cows, which was announced by the U.S. Department of Agriculture. Why It Matters: Six dairy herds in Nevada tested positive for a new variant (D1.1) of the bird flu, according to the Nevada Department of Agriculture.