The New World Screwworm Is Back. Here’s What That Means.
The New World screwworm, a flesh-eating fly that preys on livestock and other animals, has staged an unwelcome return to the United States, 60 years after the parasitic pests were officially eradicated from the country. The infestation was found in a 3-week-old calf in Texas, federal officials announced on Wednesday night. An aggressive decades-long eradication…
