Mexico and the United States reopened a sterile fly production facility in Chiapas on Saturday, June 27, to combat New World screwworms.
The initiative is critical because the parasite outbreak has disrupted the cross-border cattle trade between the two nations. By releasing sterile flies into the wild, officials said they aim to crash the screwworm population and protect livestock health.
The facility is located in the southern Mexican state of Chiapas [1]. This specialized plant produces sterile flies that, when mated with wild screwworms, prevent the offspring from surviving. This biological control method is a primary tool for eradicating the parasite from affected regions [2].
Reports said Mexico currently has 1,907 active screwworm cases [1]. The parasite targets open wounds in animals, leading to severe tissue damage and potential death if left untreated. Because livestock are frequently moved across the border, an outbreak in Mexico poses a direct threat to the U.S. agricultural economy [2].
Officials from both countries inaugurated the plant to ensure a steady supply of sterile insects. The collaboration marks a renewed effort to stabilize the regional livestock market, and prevent the parasite from spreading further north [3].
The reopening follows a period of increased activity in the parasite's spread, which necessitated the reactivation of the Chiapas site. The facility will now serve as a hub for the sterile insect technique, coordinating the release of flies across the affected zones [1].
“Mexico currently has 1,907 active screwworm cases”
The reactivation of the Chiapas plant signals an escalation in biological warfare against a specific agricultural pest to protect economic interests. Because the New World screwworm can devastate cattle herds, the joint U.S.-Mexico operation is less about local pest control and more about securing the multi-billion dollar livestock trade corridor that links the two nations.
