A new type of highly pathogenic avian influenza (HPAI) has been detected in dairy cattle in Nevada, the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) said in a Feb. 5 statement.
The strain was discovered in six herds and is different from the version of HPAI, or bird flu, that has spread in cows throughout the United States since last year, officials said.
The new strain discovered in Nevada dairy cattle is of genotype D1.1. Previous detections in dairy cattle have been of genotype B3.13, according to the agency.
Genotype D1.1. was the predominant genotype among wild birds this past fall and winter and has been identified in wild birds, mammals, and spillovers into domestic poultry, the agency said….