Screwworm Alert: What You Need to Know About New Mexico's Infected Horse A single horse in New Mexico has been infected with screwworms, a parasite that can decimate livestock populations and wreak havoc on animal health.
This development is particularly concerning as the US prepares to resume imports of livestock from Mexico.
Screwworm outbreaks are not new to the US; they have plagued warm and humid climates such as Florida and Texas in the past.