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Jun 05, 2026
The US is intensifying its response to New World screwworm as confirmed cases approach within 62 miles of the US-Mexico border. Emergency exemptions allow import of new treatments from Brazil, while sterile fly releases are expanded and a $100 million research initiative is launched. All southern ports of entry remain closed to livestock trade.
Apr 15, 2026
The FDA has expanded animal drug options for New World screwworm through conditional approvals and emergency use authorizations. The agency lists products for cattle, dogs and cats and says its guidance page will be updated as more drugs move through the system.
Feb 19, 2026
The U.S. Food and Drug Administration issued two Emergency Use Authorizations on February 18, 2026, for NexGard products to treat New World screwworm infestations in dogs and cats.
