The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is committed to providing timely and accurate information for those impacted by New World screwworm (NWS). TVMDL’s state agency partners have worked diligently to develop multiple resources. This page serves as a centralized location TVMDL clients can reference for information on reporting and identifying suspected larvae.
TVMDL strongly encourages clients to contact one of the following resources for triage of a suspected larvae instead of direct submission to TVMDL. However, TVMDL staff review every daily submission and flag any cases submitted for larvae ID as STAT. Laboratorians who have passed the USDA proficiency test for NWS identification are reviewing submissions and will immediately contact the appropriate reporting agency should a suspect case be identified.
Refer to the USDA confirmed detections dashboard for the most current case count and the Texas Animal Health Commission’s zone map to see affected counties. Information on movement restrictions within infested zones can be found on the Texas Animal Health Commission’s website.
Choose an animal group
If you see live animals with maggots, it is crucial they are reported immediately. Refer to each species’ reporting structure below for the agency or individual responsible.
Livestock
Report
In Texas, report all suspected livestock cases of NWS to the Texas Animal Health Commission by contacting the nearest regional office or the Veterinarian on Call at 1.800.550.8242.
Collection and Submission
The Texas Animal Health Commission has developed a collection guide that instructs animal owners on the proper collection and submission procedures.
Treatment
Current treatment information can be found on the U.S. Food and Drug Administration’s website.
AgriLife Fact Sheets
- New World screwworm Fact Sheet
- What to do if you suspect New World screwworm in your herd
- Livestock management considerations for New World screwworm
- The New World screwworm (NWS) threat to swine producers
Wildlife
Report
In Texas, report all suspected wildlife cases of NWS to a local Texas Parks and Wildlife Department biologist.
Texas Parks and Wildlife Guidance Documents
- General Wildlife Information for New World screwworm
- Gusano Barrenador del Nuevo Mundo Información General
- Deer Breeding Facilities Best Management Practices for New World screwworm
- Wildlife Permit Holders Information Sheet for New World screwworm
- Hunter and Landowner Guide for New World screwworm
Pets
Report
In Texas, report all suspected pet cases of NWS to a local veterinarian.
Treatment
Current treatment information can be found on the U.S. Food and Drug Administration’s website.
AgriLife Fact Sheets
- Companion animal care in the face of the New World screwworm (NWS) threat
- Cuidado de animales de compañía frente a la amenaza del gusano barrenador del nuevo mundo
