The New World screwworm, whose larva “screws” into the skin and can infect humans as well as livestock, will be here within ...

The plan: Breed millions of sterilized flies and drop them over the Texas-Mexican border to protect the more than $100 billion U.S. cattle and beef industry from the New World screwworm.

An outbreak of New World screwworms — the larval form of a type of fly that’s known to nest in the wounds of warm-blooded animals and slowly eat them alive — has been spreading across ...