Dog among 2 new Texas screwworm cases; Canada blocks Texas livestock imports (opens original article in a new tab)

Two new cases of New World screwworm in Texas have led to Canada blocking livestock imports from the state, with federal agencies implementing quarantine zones and releasing sterile flies to control the outbreak.

• USDA confirmed two new screwworm cases in Texas, involving a calf and a dog.
• Canada banned livestock imports from Texas to prevent the parasite's spread.
• Sterile flies are being released to disrupt the screwworm's reproduction cycle.