Utah Department of Agriculture and Food

New World Screwworm Travel Restrictions



Travel Restrictions Announced For Livestock and Pets Entering Utah from Florida

 (Salt Lake City) An outbreak of New World Screwworm in the Florida Keys means Utahns traveling to and from Florida with pets and livestock must take extra precautions when returning home.  The travel restrictions were put into place by the State Veterinarian’s Office to protect the health of the Utah livestock industry and to ensure the safety of animal movement.

The U.S. Department of Agriculture and the Florida Department of Agriculture and Consumer Services announced October 18, 2016 they detected screwworms in six areas west of Big Pine and No Name keys, and have quarantined the area.  Animals originating from the quarantined area are not permitted to enter Utah except by special permit issued by the State Veterinarian.

All other livestock and pets traveling to Utah from areas outside the quarantine area should be carefully examined for signs of New World Screwworm and treated appropriately by a veterinarian prior to entry in Utah.  All animals requiring a Certificate of Veterinary Inspection (CVI or animal health certificate) to enter Utah must include the following veterinary statement on the CVI:
"The animals listed on this Certificate of Veterinary Inspection have been examined by me and found to be free of Screwworm. The animals have not been exposed to Screwworm and have not originated from an area known to have Screwworm."
In early October New World Screwworm was found in wild deer and pets in the Florida Keys. Screwworm was eradicated from the USA, beginning in the 1950’s with the release of sterile male flies in the wild that mated with female flies that produced infertile eggs thus eradicating the disease by the 1960's. The screwworm is particularly destructive because unlike all the other blowflies in the New World, the fly larvae feed on living tissues, not dead tissues. The screwworm can infect any warm-blooded animal to include humans (cases are rare in people). It’s problematic for large mammals, such as livestock and pets. If left untreated, infestations are usually fatal. Therefore, this recent finding is significant.

For more information from the Florida Department of Agriculture and Consumer Services, go to this website:


Contact: Larry Lewis (801) 538-7104
Cell (801) 514-2152
Barry Pittman, State Veterinarian (801) 538-7162





posted: Nov. 1, 2016