New Mexico officials confirm two more New World screwworm cases

Animal health authorities in New Mexico have confirmed two additional cases of New World screwworm in Grant County, affecting a horse and a calf. The parasite, whose larvae feed on the living tissue of warm-blooded animals, has prompted state and federal officials to expand surveillance and fly-trapping efforts.

Authorities have established infestation zones with a minimum radius of 12.4 miles around each affected animal. Within these zones, animals must undergo inspection and, if necessary, treatment before being moved within or out of the area.

New Mexico Secretary of Agriculture Jeff Witte emphasized that early detection and prompt reporting are critical to limiting the spread of the pest. There are currently five active cases of New World screwworm reported across Texas and New Mexico.