FSIS to Start H5N1 Beef Monitoring Sampling

On September 16, 2024, the FSIS will be adding H5N1 influenza A monitoring in dairy cows at slaughter to its already robust national surveillance programs for pathogens and chemical contaminants.

FSIS will leverage its existing National Residue Program (NRP) and conduct H5N1 sampling in the muscle samples of dairy cow carcasses already collected for this program. Samples will be tested by FSIS laboratory personnel using polymerase chain reaction (PCR) testing. Carcasses sampled under the NRP are held by establishments pending results of residue testing. This process will not require additional holding time for carcasses beyond current residue testing protocols. In the event of a positive H5N1 finding, USDA will work with industry to ensure the carcass does not enter the food supply.