A potential crisis looms over the US livestock industry as the New World Screwworm threat resurges. The parasitic fly, capable of inflicting severe damage on livestock, was detected in Mexico, leading to a temporary halt on cattle imports.
Dr. Burke Healy, a leading veterinarian at the USDA’s Animal and Plant Health Inspection Service, explained that the US suspended cattle imports from Mexico in November after the discovery of screwworm in a cow imported from Guatemala. This discovery was followed by a similar case in a native bull calf in Chiapas, Mexico.
To mitigate the risk, the US and Mexico are working on a protocol that will allow for the resumption of cattle imports. This protocol will include mandatory treatment of cattle with ivermectin to eliminate any potential larvae. Additionally, Mexico will establish designated pens where cattle will be inspected by federal veterinarians before being transported to US ports for further inspection.
While the exact timeline for reopening the border remains uncertain, it’s estimated that imports may resume in early January. The USDA is taking proactive measures to safeguard US livestock and prevent the spread of screwworm.
The situation underscores the importance of vigilant monitoring and rapid response to emerging threats. As the US and Mexico collaborate to address this challenge, the livestock industry awaits further updates on the reopening of the border and the implementation of effective prevention measures.
