Two new cases of the New World screwworm have been confirmed in Texas, raising concerns about the potential impact on the cattle industry. The U.S. Department of Agriculture (USDA) announced these findings on Monday, highlighting the challenges in controlling this pest.

Impact on Local Counties

The latest cases were identified in La Salle and Andrews counties, with Andrews County bordering New Mexico. These cases involved a calf and a dog, respectively, and are part of a growing number of incidents since the screwworm was first detected in a calf last week. This brings the total confirmed cases to four.

The screwworm, a fly whose larvae consume live flesh, poses a threat not only to cattle but also to wildlife, pets, and occasionally humans. The USDA is actively working to address these cases and prevent further spread.

Efforts to Eradicate the Pest

Before its eradication in the U.S. in the 1960s, the screwworm was a significant problem for cattle ranchers. The USDA is employing a strategy of releasing sterile male flies to mate with wild females, which only mate once in their lifetime. This method aims to reduce the population and eventually eliminate outbreaks.

To support these efforts, the USDA plans to increase the production of sterile flies outside the U.S. while constructing a new facility in Texas. USDA Secretary Brooke Rollins is scheduled to receive a briefing on the situation at the U.S. Livestock Insects Research Laboratory in Kerrville, Texas.

Historical Context and Future Outlook

The screwworm was previously contained to the southern end of Panama for decades until it reemerged in Mexico in late 2024. The resurgence of this pest has prompted swift action from both the USDA and the cattle industry to prevent a widespread infestation.

The situation underscores the importance of vigilance and proactive measures in protecting the cattle industry and the broader ecosystem from this destructive pest.

Original reporting: KOAT Albuquerque — read the source article.