U.S. Secretary of Agriculture Brooke L. Rollins shared on X that a new case of New World screwworm has been detected 170 miles from the U.S.-Mexico border.
“Today, I was alerted by the Mexican government that a new case of New World screwworm was detected in Mexico, 170 miles from our southern border,” she says. “At this time, we believe this to be an isolated incident and it is ~100 miles further south of the last detected case. We will have boots on the ground within hours to independently verify the situation.”
🚨 𝐍𝐖𝐒 𝐓𝐇𝐑𝐄𝐀𝐓 𝐔𝐏𝐃𝐀𝐓𝐄 🚨
— Secretary Brooke Rollins (@SecRollins) October 6, 2025
Today, I was alerted by the Mexican government that a new case of New World Screwworm (NWS) was detected in Mexico, 170 miles from our southern border. At this time, we believe this to be an isolated incident and it is ~100 miles further…
She reported USDA staff will begin trapping, surveilling and dropping sterile flies in this area in Mexico.
“Despite the Democrat Shutdown, the intrepid men and women at the USDA continue to work around the clock to protect our great nation. We will continue to update the public as the situation develop,” she says.
According to Reuters, the infested calf had originated from the south of Mexico and was intercepted in the town of Montemorelos, south of Monterrey. None of the other 84 animals in the same shipment were found to be infested, the ministry said in a statement.
Mexico’s National Service of Agro-Alimentary Health, Safety, and Quality (SENASICA) confirmed a case of NWS in Sabinas Hidalgo, located in the state of Nuevo León, less than 70 miles from the U.S.-Mexico border on Sept. 21. The new case according to SENASICA, is not related to the case that was detected in Sabinas Hidalgo.
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