While Trump Screws Us All, the Screwworm Thrives

The health-related news comimg out of the US get more worrying by the day. In June 2026, a New World screwworm was detected in Texas cattle for the first time since 1966, a catastrophic failure traceable to the Trump administration’s systematic dismantling of animal disease prevention programs. The flesh-eating parasite, whose larvae consume living tissue and can kill livestock within days, has returned due to preventable policy choices.

Trump slashed over $382 million in USAID funding dedicated to international disease monitoring, including specific programs tracking screwworm spread through Central America and Mexico. More than 100 US-funded FAO programs were thus terminated, representing nearly 10% of the FAO’s planned budget. Scientists had warned for months that screwworm was advancing north through Mexico, accumulating 9,574 confirmed cases by late 2025, yet the administration cut surveillance funding precisely when vigilance was most critical.

The consequences are now undeniable. An infected three-week-old calf was discovered in La Pryor, Texas, approximately 30 miles from the Mexican border, triggering a 20-kilometer quarantine zone. The pest could further shrink the US cattle herd, already at its lowest level in 75 years, potentially costing Texas alone up to $1.8 billion in economic losses through livestock deaths, medication expenses, and labor costs.

Beyond negligence, Trump actively undermined US ranchers. In October 2025, he announced plans to import Argentine beef to lower grocery prices, calling domestic cattle producers’ concerns about tariffs as not understanding economics. The cattle industry condemned this as “undermining the future of farmers” and creating “turmoil at a crucial time”. Canadian authorities subsequently imposed temporary livestock import restrictions from affected Texas areas, emblematic of the international trade vulnerabilities the outbreak creates.

The administration’s response – claiming they “bought time” while defending against inevitable predictions that models showed screwworm entering in 2025 – reads as damage control rather than genuine accomplishment. Meanwhile, the USDA established sterile fly releases and quarantines, emergency measures that should have been unnecessary with proper preventative funding.

Trump’s agricultural policy combines reckless budget cuts with market interference that harms American producers. The screwworm outbreak is not merely bad luck; it is the direct result of prioritizing ideological slashing of foreign aid over protecting American food security and the livelihoods of ranchers who already face record-high consumer prices and shrinking herds.

New World screwworm poses serious, potentially fatal dangers to humans through myiasis, where larvae burrow into and consume living tissue. While primarily affecting livestock, humans can be infested as well – particularly those with open wounds, diabetes, or peripheral vascular disease. The first US human case was confirmed in August 2024. Infestations cause painful, foul-smelling wounds that worsen rapidly and can lead to death if untreated, with scalp involvement carrying an 8% mortality rate as larvae may burrow through the skull into the brain.

Update 11/6/26:

USDA had already confirmed the first US livestock case in decades in a 3-week-old calf in Zavala County, Texas, and by June 9, 2026 it was reporting six domestic animal detections, including cases in Texas, New Mexico, and a goat in Gillespie County.

A few final points:

• Precautions consist in measures like keeping wounds clean and covered, wearing protective clothing, using insect repellent, and sleeping indoors with screens are essential.
• Treatment might include Ivermectin – yes, the drug that was hyped for COVID might finally come into its own.
• The US meat market share in Europe is extremely small, less than 1% of Europe’s total meat consumption.
• The whole story might seem insignificant, would it not confirm the many other ways in which the Trump administration is almost systematically endangering public health in the US and beyond (see previous posts).