The U.S. Food and Drug Administration (FDA) has issued a warning over an alleged “bird flu” contamination in the American food supply.

The FDA issued an alert on Tuesday claiming that bird flu – Highly Pathogenic Avian Influenza A (H5) and A (H7) virus (HPAI) – has been detected in cow’s milk destined for human consumption.

The federal agency says the virus was detected in pasteurized cow’s milk.

The alert comes weeks after Novel Influenza A (H5N1) Avian flu was detected in a human.

The infection reportedly occurred after the man was in contact with dairy cows.