Minnesota imposes stricter rules on pet imports amid rising New World screwworm cases

Minnesota has introduced enhanced entry requirements for dogs and cats from states affected by New World screwworm infestations, including quarantine measures and strict documentation, to prevent parasite spread as cases surge in Texas and New Mexico.

Minnesota has tightened entry rules for dogs and cats arriving from states with active New World screwworm infestations, including a prohibition on animals coming from specifically designated infected sites, as state officials move to reduce the risk of introducing the parasite through pet transport.

According to the Minnesota Board of Animal Health, animals from affected states must have a certificate of veterinary inspection issued within 72 hours of travel, proof of rabies vaccination submitted in advance, and an approved treatment recorded before departure. On arrival, pets face at least five days of quarantine, while animals that fail to meet the requirements can be held for 10 days and must be cleared in writing by a licensed veterinarian. The board said the measures are intended to keep imports moving while limiting exposure.

The action follows detections in Texas and New Mexico, where the USDA has been tracking a growing number of cases. The parasite’s larvae feed on living tissue rather than dead matter, which can quickly turn minor wounds into serious infections. For practising veterinarians, the practical message is clear: review travel histories carefully, inspect imported dogs and cats for wounds or infestation, and advise owners to report any suspicious lesions immediately.

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