Inside the Program that Breeds Billions of Screwworm Flies Each Year

Inside the program that breeds billions of screwworm flies each year

A program in Panama breeds, sterilizes, and releases 20 million screwworm flies a week to protect livestock from flesh-eating larvae. This is how it works.

APHIS will host screwworm webinars Aug. 12-13

USDA will provide information on New World screwworm for animal industry, veterinarians and animal health regulatory officials.

The US will soon drop millions of flies from planes to save cattle ranchers. Why?

US shuts Mexican border to halt spread of flesh-eating screwworm in fear of herd depletion and price spikes, the best defence are millions of sterile flies.