HealthExperts warn screwworm could spread in the US as eradication grows harder

Scientists fear current eradication efforts may not contain the parasitic infestation as it moves toward the US. Cameras placed in remote Central American forests to track illegal cattle movement have recently captured another alarming trend: wildlife becoming rapidly infected with New World screwworm. Experts say this offers a warning about how the fly could reach the US and reveals new obstacles to driving it back south. They expect the effort to take years.

New World screwwormUnited Statesparasiteswildlife

TThe Guardian★★★☆☆2026-07-12 11:00Original