Flesh-eating screwworm found in Texas cows and dog. Are humans at risk?

A close up of a white worm with black fangs against a dark red background.

A fly that deposits its parasitic, flesh-eating offspring inside cows has been detected in Texas for the first time in decades, the U.S. Department of Agriculture (USDA) reported Wednesday (June 3).

A second case in a cow in the same county was announced June 5, and two more cases — in a cow and dog — in other Texas counties were flagged on June 8. Another cow case was announced June 9, bringing the total to five.