On 2026-06-19, the IAEA and FAO launched a joint research project aimed at containing the screwworm outbreak in the Americas, including support for sterile-fly production that could be required at very high weekly volumes in an emergency response. The announcement comes as affected zones include parts of Central America and Mexico and after confirmation of the pest in the U.S.; Canada has already restricted cattle imports from affected areas.
Why it matters · This is a concrete multilateral response to a transboundary animal-health threat with direct implications for livestock production, trade flows, veterinary capacity, and border biosecurity across the Americas.
- Canadian Food Inspection Agency update on cattle or animal-product import restrictions from affected U.S., Mexican, or Central American zones by Tuesday, 23rd of June
- U.S. Department of Agriculture APHIS release on additional screwworm detections, quarantine boundaries, or sterile-fly deployment requirements by Tuesday, 23rd of June
- IAEA or FAO publication of project implementation details identifying production sites, partner labs, or operational milestones by Tuesday, 23rd of June
- World Organisation for Animal Health notification of new confirmed New World screwworm events in the Americas by Tuesday, 23rd of June
Federal and provincial livestock surveillance escalation
- Primary scenarioContainment effort stabilizes regional outbreak
Regional containment is Likely over the short_term if sterile-fly production and movement controls scale without major new detections.
- Secondary scenarioNorth American spread drives tighter biosecurity and trade disruption
Further North American spread remains a Developing possibility over the short_term, contingent on new detections and containment performance.