New World screwworm

Once eradicated in the United States, a maggot that feeds on living, warm-blooded animals is inching back toward Texas. It may cross the Southern border before the end of the year. Petrie Dish host Bonnie Petrie talks with Sonja L. Swiger, Ph.D., from the Texas A&M University Department of Entomology and Texas A&M AgriLife Extension about the screwworm, the threat it poses to animals and humans, and what can be done to minimize the damage.