Diseases

As the fight to keep the flesh-eating parasite out of the U.S. intensifies, the economic impact on ranchers and the industry is top of mind. “This pest will be one that leaves quite a mark on our economy,” says one veterinarian.

Native to east Asia, the ALHT was first detected in New Jersey in 2017. Since then, it has spread to more than 20 states with recent confirmations in Illinois, Michigan and Iowa.

NCBA’s Woodall says the goal is complete eradication — not just from the U.S., but from Mexico and Central America, ultimately pushing the fly back to its original range in South America.

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Spearheaded by National Economic Council Director Kevin Hassett and USDA Secretary Brooke Rollins, the plan prioritizes enhanced biosecurity measures and medication to control the spread of the virus and moves away from mass culling of infected flocks.

Outgoing USDA Secretary Tom Vilsack sent a letter to Mexico’s Secretary of Agriculture acknowledging the progress made in reopening cattle trade between the two countries following the detection of New World Screwworm, but says more action is needed to resume trade.

The report echoes calls by other scientists to ramp up the surveillance of felines, which are susceptible to the virus and have a high mortality rate. The AVMA says several cases in cats linked to poultry or wild bird exposure had been reported before the outbreak began in dairy cows last spring.

New World Screwworm is a serious veterinary pest that can cause severe damage to livestock and wildlife populations. The detection of New World Screwworm in Mexico and the subsequent USDA actions may have significant implications on trade and travel.