U.S. Department of Homeland Security

11/06/2026 | Press release | Archived content

New World Screwworm

New World screwworm (NWS) is a fly whose larvae feeds on the living tissue of animals, primarily mammals, including humans. NWS flies lay their eggs on open wounds, mucous membranes or breaks in the skin as small as tick bites, from which the larvae emerge and burrow into flesh.

Federal, state, local, tribal, and territorial partners may use this Catalog to support their jurisdiction in fulfilling exercise requirements for a variety of grant deliverables or to simply hold cross-sector conversations. These scenarios are designed to raise awareness of threats beyond traditional disaster scenarios, providing an opportunity to practice response roles, responsibilities, partnerships, and coordination that that may not be present in other tabletop exercise opportunities.

U.S. Department of Homeland Security published this content on November 06, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on November 10, 2026 at 18:46 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]