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Texas Raises Alarm Over Rising Screwworm Threat

Texas Raises Alarm Over Rising Screwworm Threat
Apr 14, 2026
By Farms.com

State urges producers to stay alert as screwworm moves closer to US border

Texas agriculture officials have raised serious concerns after confirming that the New World screwworm has been detected closer to the United States than before. The pest was recently found in northern Mexico, less than 100 miles from the Texas border. This development has increased fears across the agricultural sector due to the severe risk it poses to livestock. 

"The New World screwworm is not some distant problem. It is a direct and imminent threat to Texas, and we are treating it that way. This is a high-stakes situation for our ranchers, our livestock industry, and our food supply, and we are moving aggressively to stay ahead of it,” said Texas Agriculture Commissioner Sid Miller. 

"While the USDA has taken steps to respond, the reality is the spread of the New World screwworm has not been successfully contained to date. That is a serious concern, and it underscores exactly why Texas must be proactive in dealing with this threat. We are fully engaged and prepared to escalate every available tool to ensure this threat is stopped,” said Miller. 

The New World screwworm is a dangerous parasite that attacks warm‑blooded animals by laying eggs in open wounds. Once the larvae hatch, they feed on living tissue, causing serious injury or death if left untreated. If the pest spreads into Texas, it could threaten ranchers, livestock health, and the stability of the food supply. 

State leaders have emphasized that this is not a distant issue, but an immediate concern requiring strong preventive action. While federal agencies have taken steps to respond, officials believe more urgent measures are needed to stop the spread before it reaches Texas. 

Farmers and ranchers across the state are being asked to stay highly alert. Regular livestock inspections are critical. Producers should look for signs such as unusual wounds, irritation, or behavior changes in animals. Any suspected cases should be reported immediately, as early detection can prevent widespread damage. 

Texas has successfully controlled screwworm outbreaks in the past through strong cooperation, accountability, and quick response. Officials remain confident the state can do so again, but only if everyone plays a role. 

By acting quickly, reporting concerns, and following preventive practices, Texas producers can help protect animals, livelihoods, and the broader agricultural economy from this growing threat. 

You may also be interested in reading the article: FDA Clears IVOMEC Use Against Screwworm. 

Photo Credit: gettyimages-pamwalker68


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