How Millions Of Flies Can Help Stop The New World Screwworm

The New World Screwworm is creeping north, threatening cattle in Mexico and the US. Fighting flies with flies has worked before.

The New World screwworm has cattle ranchers, entomologists, and the federal government on edge. The pest was successfully eradicated from the US decades ago, but has recently been moving north from South America into Central America and Mexico, with concerns that it may cross the border into Texas. It’s notorious for laying eggs in the wounds of animals and slowly eating them from the inside out. Host Flora Lichtman speaks with entomologist Sonja Swiger about past efforts to get rid of the New World screwworm, and why that process involves dropping millions of bugs out of airplanes.

Guest: Dr. Sonja Swiger is an entomologist and professor at Texas A&M in Stephenville, Texas.

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