The U.S. Department of Agriculture (USDA) has confirmed a second case of New World screwworm in Texas, detected in a one-month-old calf in Zavala County. This follows an initial discovery earlier this month, prompting federal authorities to implement containment zones and sterile insect releases to suppress the flesh-eating parasite’s population, according to the USDA’s Animal and Plant Health Inspection Service.
Why the New World Screwworm poses a risk to livestock
New World screwworm larvae are dangerous because they feed on the living tissue of warm-blooded animals. According to the USDA, these infestations create severe, potentially fatal wounds if they are not treated quickly. The parasite threatens a wide range of animals, including livestock, wildlife, and pets. In rare instances, the screwworm can also affect humans.
The USDA has successfully eradicated New World screwworm in the United States before. Dudley Hoskins, the agency’s Under Secretary for Marketing and Regulatory Programs, stated that the department is moving quickly to repeat that success.
How the detection is impacting cross-border trade
The discovery of the parasite has triggered immediate trade restrictions. The Canadian Food Inspection Agency announced on Friday that it is temporarily restricting imports of livestock, including horses, from affected regions in the U.S. Specifically, any animal that was present in Texas within 21 days of crossing the border will not be permitted entry into Canada, according to the Canadian Food Inspection Agency.
Is the U.S. food supply at risk?
Federal officials maintain that the U.S. food supply remains safe. According to the USDA, New World screwworms do not infest meat, fruits, vegetables, or other common food products. The agency notes that any affected animal would be identified during standard inspections, ensuring that no contaminated products enter the commercial supply chain.
Proactive steps for livestock owners
Texas Farm Bureau President Russell Boening has urged livestock owners and all Texans to stay vigilant. Surveillance and reporting remain the highest priorities for the agricultural community. According to Boening, the speed of identification is the most critical factor in successful eradication efforts: “The quicker an infestation is found, the quicker the New World screwworm can be eradicated.”
Frequently Asked Questions
What is the current containment strategy?
The second case was detected within an existing movement-control zone. Officials are continuing to release sterile insects into the area to suppress the pest population, according to the USDA.
How far apart were the two Texas cases?
The second case, found in a one-month-old calf in Zavala County, was located roughly 5.6 miles from the site of the initial detection, according to the USDA’s Animal and Plant Health Inspection Service.
Are other samples testing positive?
No. Federal officials have collected additional samples from the surrounding area, and all have tested negative thus far, according to the USDA.
Stay informed on the latest developments in livestock health and agricultural policy. Subscribe to our newsletter for updates on this developing situation and other critical industry news.
