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Canada has imposed a temporary ban on livestock from Texas after flesh-eating screwworms were found in calves in the US state. The outbreak was confirmed in two calves in Texas, prompting the US to declare a disaster emergency, while Canada advises farmers to monitor livestock and pets for wounds or foul odors. The parasite, historically spread in warmer climates, has led US officials to deploy genetically modified sterile flies and sniffer dogs to control the outbreak.
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