New World Screwworm

The New World screwworm is a parasitic fly that lays eggs in the living tissue of fresh wounds in warm-blooded animals. The larvae (maggots) feed on the host’s flesh, causing severe wounds and often death if untreated.

Texans can help prevent the spread of New World screwworm and protect native wildlife species by actively monitoring and reporting signs of New World screwworm infestations in urban and rural wildlife populations.

If you suspect New World screwworm (NWS) in your livestock, immediate action is critical to prevent further spread and protect animal health.
Inspect. Collect. Protect.

Proactive livestock management and seasonal planning are essential in reducing the risk of New World screwworm infestation.

New World Screwworm poses a particular threat to cattle and wildlife. While rare, New World Screwworm can also infest human tissue.

While livestock and wildlife represent most NWS cases in a given area, dogs and cats are also at risk.

Texas swine producers can help protect their livestock from New World screwworm by staying vigilant about monitoring for signs of infestation on animals, employing best management practices and following veterinary treatment guidelines.

Los conocimientos necesarios para monitorear, detectar y reportar signos de infestación por el gusano barrenador.

Aunque el ganado y la fauna silvestre representan la mayoría de los casos de GBNM en una región determinada, los perros y los gatos también están en riesgo.

The northern migration from central America of the New World screwworm (NWS), Cochliomyia hominivorax, poses a renewed threat to Texas and United States livestock producers.