New World Screwworm and Living and Working with Animals

If you suspect a pet, livestock, or wild animal has an NWS infestation, get help as soon as possible.  

For pets or livestock, call your veterinarian and contact the Texas Animal Health Commission (TAHC) at 1-800-550-8242 or through your local TAHC regional office.  

If you see a live wild animal with larvae, immediately contact Texas Parks and Wildlife (TPWD) through your local wildlife biologist at 1-512-389-4505. 

Information for Pet Owners

While livestock and wildlife represent most NWS cases, dogs and cats are also at risk. Pet owners are an important part of stopping the spread of this pest.  

Check pets every day for wounds, including past tick bites. Watch for a bad smell, discharge, and maggots in or near the wound. Visit a veterinarian immediately if you suspect an infestation. Do not attempt to remove the larvae or treat the animal yourself. 

If you suspect an NWS infestation, contact your veterinarian and the Texas Animal Health Commission at 1-800-550-8242 or through your local TAHC Regional Office

For more information, visit the Texas A&M AgriLife Extension website.  

Working with Animals

If you suspect an NWS infestation, please notify the following authorities immediately:

New World Screwworm Training Response, June 23, 2026: