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S 1751119th CongressIn Committee

STOP Screwworms Act

Introduced: May 14, 2025
Agriculture & Food
Standard Summary
Comprehensive overview in 1-2 paragraphs

The STOP Screwworms Act would require the Secretary of Agriculture to establish one or more modular New World screwworm fly rearing facilities in areas identified as at risk for screwworm infestation. The facilities would rear sterile New World screwworm flies and also disperse them to at-risk areas to help prevent outbreaks. Eligible areas are U.S. state areas deemed at risk due to migratory patterns of confirmed detections and suitability for releasing sterile flies. The bill would require annual reporting on the threat to agriculture from screwworms and the effectiveness of the control efforts, with results publicly posted. It authorizes $300 million in funding to carry out these provisions, available until expended. The measure amends the Animal Health Protection Act to add a new section creating this program, and it carries the short title the STOP Screwworms Act. In short, the bill aims to bolster the United States’ ability to prevent New World screwworm outbreaks by building rearing and release capacity for sterile flies and tracking progress publicly and to Congress.

Key Points

  • 1Establishment of New World screwworm fly rearing facilities: The Secretary must begin construction within 180 days after enactment for 1 or more modular facilities that rear sterile flies and disperse them to risk areas.
  • 2Eligible areas: Areas in states designated by the Secretary as at risk due to migratory detections of screwworm flies and suitability for releasing sterile flies to protect other areas.
  • 3Reporting and transparency: The Secretary must produce and publicly post annual reports (and provide a report within 1 year of enactment) detailing the threat to U.S. agriculture and the efforts and effectiveness of the facilities and related control measures.
  • 4Funding: Authorization of $300 million to carry out these provisions, available until expended.
  • 5Legal basis: The provisions are added as a new section (Sec. 10409B) to the Animal Health Protection Act and are titled the STOP Screwworms Act.

Impact Areas

Primary group/area affected: U.S. agriculture and livestock sectors, including farmers, ranchers, veterinarians, and state agricultural agencies, particularly in regions at risk of screwworm infestation.Secondary group/area affected: Public health and wildlife/livestock welfare sectors concerned with animal health and disease control; potential interactions with international trade and export markets that can be affected by pest-control status.Additional impacts:- Economic impact: Upfront investment of up to $300 million with ongoing operations, intended to reduce losses from screwworm infestations and potentially stabilize livestock production costs and trade.- Environmental and operational considerations: Use of sterile insect technique (SIT) requires careful management of rearing and release programs; the modular design suggests adaptable deployment, but implementation details (locations, release rates) are not specified in the bill.- Transparency and oversight: Annual reporting and public dissemination of information increase government accountability and provide stakeholders with updates on threat levels and program effectiveness.
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