Which agency regulates the entry of dogs used in livestock handling and requires quarantine to ensure they are free of tapeworms, and inspects dogs from countries where screwworm is endemic?

• A. NIOSH
• B. CDC
• C. APHIS
• D. DHS

Answer: (C)

Regulation of entry for animals to protect animal health is handled by APHIS. The Animal and Plant Health Inspection Service oversees import permits and quarantine for animals, including dogs used in livestock handling. They require quarantine to ensure imported dogs are free of tapeworms and they inspect dogs from screwworm-endemic countries to prevent introduction of screwworms and related parasites. This focus on veterinary public health and agricultural biosecurity distinguishes APHIS from agencies like the CDC (which centers on human health risks), NIOSH (occupational safety), or DHS (border security in general).