The New World screwworm has re-emerged in the US, posing a significant threat to the nation’s livestock. The parasite’s devastating effects on the US could last for decades if not properly addressed.
Past Eradication Efforts
In 1966, the US successfully eradicated the screwworm through a large-scale response led by entomologists like Edward F. Knipling. Knipling’s theory of reducing or eliminating the screwworm altogether proved effective, and his work on the Sterile Insect Technique played a crucial role in the eradication effort.
The technique involved releasing sterile flies to mate with wild screwworms, thereby reducing the population. This approach was first tested on Sanibel Island in 1951 and later implemented on a larger scale in Texas and other affected areas.
Current Outbreak
The current outbreak has prompted concerns about the potential economic impact on the livestock industry. In 1976, the outbreak resulted in an estimated $330 million in losses for Texas alone, which would be equivalent to nearly $1.8 billion in today’s dollars.
Government officials are working to pinpoint the source of the current outbreak and implement measures to control its spread. The USDA has estimated that the industry saved over $900 million annually as a result of the past eradication effort.
Original reporting: KTSA News/Talk (San Antonio) — read the source article.
