The New World screwworm has reemerged, and its spread is testing U.S. readiness after Trump staffing cuts, officials and experts said.
The U.S. spent decades driving the New World screwworm far into South America.
Officials are working to beat it back yet again using many of the same tried-and-true methods the government used in the 1950s.
Experts have been tracking the path of the parasitic fly as it moved steadily northward.