Mexico's president suggested the U.S. is exaggerating the threat but the U.S. largely eradicated this particular pest in the 1970s.
Mexico barred from sending cattle to U.S. after some test positive for the flesh-eating New World screwworm
July 10, 2025
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BY MEGAN JANETSKY, MARÍA VERZA AND OTHERS
July 8, 2025
Mexican cattle are again barred this month from entry to the United States over fears of spreading a flesh-eating parasite.
Martin Ibarra Vargas, a rancher in Sonora, calls it “tiempos de vacas flacas," the times of the lean cows.
The US has closed its ports of entry to Mexican cattle for fear of the parasitic, flesh-eating worm spreading north.
U.S. officials worry that if the fly reaches Texas, its flesh-eating maggots could cause billions of dollars in losses and cause…
The American and Mexican governments are exploring “all options” to battle a deadly parasite threatening cattle and wildlife.
Mexico exported just over one million head of cattle to the United States in 2024, according to official estimates.
