South Texas hunters and outdoor enthusiasts will need to monitor animals potentially affected by an infectious disease caused by maggots after positive detection was found in a cow across the southern border.

Texas Parks and Wildlife officials warn hunters of an invasive flesh-eating parasite recently found in animals in Mexico.

Texas wildlife officials are on the lookout for a flesh-devouring fly larvae known as the “Man-eater” after cases of the sickening vermin were recorded in Mexico.

Despite there currently being no confirmed identifications of NWS in Texas, it was recently detected in a cow at a checkpoint in southern Mexico, near Guatemala, according to TPWD. The sighting in Mexico follows the pest’s recent northward expansion through Panama, Costa Rica, Nicaragua, Honduras and Guatemala.

"Those enjoying Texas' natural resources have an opportunity to serve as the first line of defense in protecting wildlife, livestock, and human health," said Dr. J Hunter Reed, TPWD wildlife veterinarian, in a news release. "Their eyes and ears will be critical to quickly responding and managing this threat."

Just one fly can lay up to 300 eggs at a time and is drawn "to the odor of a wound or natural opening on a live, warm-blooded animal."

A parasitic worm eradicated in the United States nearly 60 years ago could be threatening a comeback, Texas wildlife officials warn. The New World Screwworm was recently detected in Mexico, and the Texas Department of Parks and Wildlife is asking people in South Texas to watch out for animals affected by the screwworms.

The Texas Parks and Wildlife Department sent out an advisory warning hunters, livestock owners, and outdoorsy folks near the southern border to watch out for a flesh-eating parasite known as the New World Screwworm.

The screwworm can be devastating to crops and livestock, as it can cause serious, often fatal damage to living things.