General
General information and reference materials related to the New World screwworm response.
Preparedness, Monitoring, and Compliance for Fairs
This guide establishes required procedures and expectations for New Mexico fair boards to ensure compliance with New World Screwworm (NWS) response guidance issued by the New Mexico Livestock Board (NMLB) and USDA APHIS. These measures protect animal health, prevent spread of NWS, and maintain continuity of fair operations.
Infested Zone (IZ) Information Sheet
Find out what an infested zone is.KEEP IN MIND:
- The 12-mile infested zone around the dog's home location remains in place to support surveillance and safe animal movement.
Movement requirements and surveillance activities remain in place until animal health officials determine that New World screwworm has been eradicated from the affected area. Under USDA guidance, an Infested Zone generally remains in effect for at least three months (approximately 24 days per NWS life cycle) after the last New World screwworm detection, although the duration may vary based on suitable habitat, environmental conditions, climatic factors, surveillance results, and other epidemiological findings. This timeframe is outlined on page 24 of USDA New World Screwworm Response Playbook (page 24)
Adult New World Screwworm Identification and Commonly Confused Species
Many blow fly species found in the United States appear similar to NWS, especially to individuals without specialized training. Identification of NWS requires knowledge of the active species in the collection area and differences in their appearance from NWS- Visit the NWS Identification and Commonly Confused Species
- View the Identification and Commonly Confused Species (PDF) version
United States Department of Agriculture
The USDA provides leadership on food, agriculture, natural resources, and rural development, including animal health programs and screwworm eradication efforts.
Find Your Local NMSU Cooperative Extension Office to get sampling kits
NMSU ACES drives economic and community development in New Mexico through research, academic programs, and cooperative extension.
Adult New World Screwworm (NWS) Identification
What does the New World screwworm look like?
New World Screwworm Awareness for 4-H & FFA Livestock Exhibitors
Protect Your Animals Through Daily Observation
Livestock
Resources for livestock producers, ranchers, and agricultural workers concerned about New World screwworm.
- USDA APHIS — New World Screwworm Overview
- New Mexico Livestock Board
- NMDA Reporting Form
- Find Your Local NMSU Cooperative Extension Office
- Animal Drugs for New World Screwworm (PDF)
- Factsheet: How to Sample (PDF)
- Be Alert, Not Alarmed (PDF)
- New World Screwworm and Livestock Border Closures: A Guide for New Mexico Livestock Producers
- Pest Alert | New World Screwworm | Spanish
- Brochure | New World Screwworm: What You Need To Know | Spanish
- Poster | Screwworm: An International Threat to Human and Animal Health
- Pest Card | New World Screwworm
- Tip sheet for producers (PDF)
- Handout: Stop New World screwworm: agriculture employees / Detenga al gusano barrenador del Nuevo Mundo (empleados)
- Handout: Stop New World screwworm: agriculture producers / Detenga al gusano barrenador del Nuevo Mundo (supervisor)
For Employers:
New World Screwworm Inspection Techniques in New Mexico
Otero County Extension Agent Sid Gordon demonstrates how to inspect for New World screwworm.
Veterinarians
Clinical and diagnostic resources for veterinarians assessing or treating suspected New World screwworm cases.
- USDA APHIS — Veterinary Resources
- New Mexico Livestock Board — Report a Case (Coming Soon)
- NMDA Reporting Form
- Sampling Protocol Fact Sheet (PDF)
Wildlife
Resources for wildlife managers, biologists, and land managers monitoring screwworm in wildlife populations.
- Be on the Lookout for New World Screwwworm (PDF)
- New Mexico Department of Wildlife
- USDA APHIS — New World Screwworm Overview
- New Mexico Livestock Board — Report a Case (Coming Soon)
- Wildlife Screwworm Fact Sheet (PDF) — (Coming Soon)
Humans
Information for people who may have been exposed to or are concerned about New World screwworm infestation.
- Centers for Disease Control and Prevention (CDC)
- New Mexico Department of Health
- Human Infestation — What to Know (PDF) — (Coming Soon)
- · Report human infestations immediately to the New Mexico Department of Health at 1-833-SWNURSE (1-833-796-8773) or TEXT NMDOH (66364).