Canada's food inspection agency has imposed a temporary ban on livestock from Texas after two cases of the New World Screwworm — a parasitic fly whose larvae burrow through the living flesh of warm-blooded animals — were confirmed in the state this week, marking the first such outbreak there in 60 years. Texas Governor Greg Abbott declared a state of disaster over the "imminent threat" to the agricultural industry, with both infected calves found near the Mexico border in Zavala County. The US is responding by releasing sterile flies and deploying specialist sniffer dogs at the border, though experts warn that current sterile fly production capacity of around 100 million per week falls far short of the estimated 600 million needed to contain the outbreak.