By Scout Nelson
Mexico's border state of Sonora has confirmed its first case of New World screwworm (NWS) in a cow in the southern part of the state, about 292 miles from the U.S. border. The discovery has prompted immediate containment efforts, although U.S. officials remain committed to reopening livestock imports through the Douglas, Arizona, port.
Sonora's Ministry of Agriculture quickly implemented surveillance, containment, and control measures to prevent the pest from spreading. As part of its response, authorities released 360,000 sterile New World screwworm flies, a widely used method for controlling infestations. Sonora is considered one of Mexico's lowest-risk states for NWS due to its strong animal health and disease prevention programs.
The case was confirmed just days before the planned August 24 reopening of the Douglas, Arizona, livestock port, which will resume livestock imports from Mexico. Despite the detection, the U.S. Department of Agriculture (USDA) has stated that reopening plans remain on schedule.
USDA officials said they are closely monitoring the situation and coordinating with Mexican authorities. The agency noted that extensive safeguards have already been established at the Douglas port to minimize the risk of NWS entering the United States.
These measures include enhanced surveillance, rapid diagnostic capabilities, advance livestock treatment requirements, multiple layers of inspections before and at the port, improved communication systems, and coordinated response procedures. Federal officials also emphasized that personnel, technology, laboratory resources, and interagency support are in place to ensure safe operations.
Authorities on both sides of the border will continue monitoring developments in Sonora and are prepared to adjust protocols if necessary. Their goal is to protect animal health while maintaining the safe movement of livestock between Mexico and the United States.
Photo Credit: gettyimages-pamwalker
Categories: Kansas, Livestock