Infestation spread modeling, SIT (Sterile Insect Technique) efficacy, wound myiasis risk, livestock impact assessment, and SIT release optimization β grounded in USDA APHIS NWS eradication science.
Historic USDA APHIS sterile insect program parameters. Select a benchmark program to auto-populate SF24-S.004 SIT Efficacy inputs.
USDA NASS cattle and calf values by state. Auto-populates livestock value inputs in SF24-E economics calculators.
Compare myiasis risk score against SIT suppression efficacy to guide treatment vs. prevention resource allocation.
Model SF24-S.001
Composite 0β100 risk index for New World Screwworm infestation. Combines wound susceptibility, seasonal fly activity, regional presence, wound age, fly population pressure, and inspection frequency per USDA APHIS risk framework.
Model SF24-S.002
Estimates maximum dispersal distance of adult screwworm flies based on temperature, wind speed, terrain, and days since emergence. Outputs quarantine buffer zone and area at risk per USDA APHIS emergency protocols.
Model SF24-S.003
Predicts screwworm life stage completion using accumulated degree-days. Uses Kunz et al. (1980) base temperature of 50Β°F. Critical for SIT release timing and infestation response window planning.
Model SF24-S.004
Models population suppression via Knipling's sterile insect technique framework. Calculates sterile:wild ratio, fertile mating probability, weekly suppression trajectory, and weeks to population collapse. Benchmarked against USDA APHIS program parameters.
Model SF24-S.005
Estimates number of screwworm larvae present in a wound from wound dimensions, infestation age, observed egg masses, temperature, and instar stage. Classifies treatment urgency per USDA ARS NWS research protocols.
New World Screwworm is a federally regulated pest eradicated from the US in 1966 via the world's first successful sterile insect technique program. USDA APHIS maintains a permanent eradication barrier in Panama. Florida reported active cases in 2024β2025. These calculators support USDA APHIS emergency response, veterinary field assessment, and SIT program planning based on research from the USDA ARS Screwworm Research Unit, Knipling (1955), Kunz et al. (1980), and Graham & Hourrigan (1977).
β οΈ Report suspected NWS immediately: USDA APHIS 1-866-536-7593 Β· State Veterinarian