Screwworm Discovery Pauses U.S.-Mexico Cattle Trade 

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United States: The United States has recently imposed a suspension of four months on cattle imports from Mexico following the detection of New World screwworms in the town of Catazajá in Chiapas. The Mexican government confirmed it on Sunday, assuring that it will cooperate with the US authorities regarding the elaboration of measures that will guarantee the uninterrupted delivery of non-contaminated goods. 

Trade Effect Limited to Cattle 

As said by the officials, this ban affects only the importation of cattle while other exports are still allowed without restriction. Mitigation measures are currently being put in place to prevent further spread of the pest and reopen trade as soon as possible. 

Screwworm Infestation Explained 

The USDA reported that Mexico’s chief veterinary officer identified NWS in a cow at a checkpoint near the Guatemala border. Screwworm maggots invade wounds and feed on the living tissue of warm-blooded animals, including humans. Infestations can often go unnoticed but may manifest as growing wounds, visible larvae, and signs of distress. 

Call for Action in Affected Regions 

The USDA has urged agricultural officials in Mexico and Central America to take immediate steps to curb the spread of screwworms. Livestock producers in impacted areas are encouraged to inspect animals and pets for signs of infestation and report any cases promptly, as reported by Reuters. 

Collaboration to Mitigate Impact 

Both governments are working on measures to control the outbreak while minimizing trade disruptions. Efforts are focused on restoring the free flow of cattle exports while safeguarding animal health and public safety.