First US screwworm case in 60 years: Should America be worried?
The New World screwworm , a flesh‑eating parasite which infects cattle and other warm‑blooded animals, has been found in a calf in Texas, the US Department of Agriculture announced on Wednesday. The…
The New World screwworm , a flesh‑eating parasite which infects cattle and other warm‑blooded animals, has been found in a calf in Texas, the US Depar
Read Full Story at Al Jazeera →Why This Matters
The reemergence of the New World screwworm in the U.S. after six decades is not just a veterinary concern—it underscores the fragility of biosecurity in an era of globalized trade and climate shifts. Livestock diseases once thought eradicated can resurface due to smuggling, migratory animals, or even unintentional human transport, making this a test case for how prepared the agricultural sector and public health systems truly are.
Background Context
Eradicated from the U.S. in 2002 through aggressive sterile male release programs, the screwworm was once a scourge that cost the livestock industry hundreds of millions annually. Its return suggests a lapse in surveillance or a breakdown in border controls, raising questions about whether funding for veterinary infrastructure has waned in favor of other priorities.
What Happens Next
Expect rapid deployment of eradication tactics, including expanded sterile insect releases and quarantine zones, but the timeline for containment will depend on how quickly the parasite spreads. If eradication fails, the economic ripple effects—higher meat prices, trade restrictions, and livestock losses—could reshape regional farming economies, particularly in Texas, a top cattle-producing state.
Bigger Picture
This incident mirrors a broader pattern of zoonotic and agricultural threats gaining footholds in new regions, from avian flu to African swine fever. As climate change alters animal migration patterns and global supply chains strain, the U.S. may face a future where even "solved" diseases require perpetual vigilance—a daunting prospect for a nation that once assumed such risks were behind it.
