New Mexico expands screwworm surveillance as cattle imports resume

New Mexico officials have confirmed a second case of New World screwworm in Grant County, identified in a horse on September 17. In response, state and federal authorities are expanding surveillance and fly-trapping efforts. An infested zone with a minimum 12.4-mile radius has been established around the affected animal, requiring inspections and potential treatments for animals moving within or out of the area.

In related developments, the Texas Animal Health Commission has lifted several quarantine zones in South and Central Texas that were originally imposed to prevent the parasite's spread. These restrictions, which included areas in Jim Hogg, Zapata, and Starr counties, were eased after surveillance indicated control measures were successful.

Additionally, cattle imports have resumed at the Santa Teresa, New Mexico, border crossing after a suspension lasting more than 16 months. The resumption follows intensive inspections by the U.S. Department of Agriculture and Mexico’s SENASICA. On the first day of reopening, the Unión Ganadera Regional de Chihuahua expected to export more than 400 head of cattle.