A dangerous, flesh-eating parasite is prompting changes to import rules. The parasite in question is the New World screwworm, which poses a threat to livestock. To protect livestock, tighter requirements are being implemented for cattle originating from Mexico.

These new rules aim to safeguard state livestock from the parasite's harmful effects. The parasite is known to be a significant threat, and the new import rules are a response to its spread. Further details about the new requirements and the parasite's impact are available from the source.