Second New World screwworm case confirmed in Cochise County, Arizona

Screwworm: second Arizona case confirmed. Officials confirmed a second New World screwworm case in Cochise County, Arizona. This one is in a domestic horse.

No known travel history. The horse had no known travel history. The case is about 45 miles from the first, a dog infected in late October.

A new Infected Zone. A 20-kilometer Infected Zone is being set up, with animal movement restrictions and suspended self-inspection.

Why cattle buyers should watch. Spread into a new Southwest location tightens livestock movement and raises the risk of further limits on Mexican cattle shipments. That supports US cattle prices by limiting supply and trade flows.

Screwworm is now in Arizona twice. A second New World screwworm case is confirmed in Cochise County. This time it's a domestic horse with no known travel history.

About 45 miles from the first case. The first case was a dog infected in late October. The new case sits roughly 45 miles away, so this is a new location, not the same spot.

A new 20 km Infected Zone. Officials are setting up a 20-kilometer Infected Zone around the new case, with animal movement restrictions and suspended self-inspection.

Livestock movement gets tighter. Spread into a new Southwest location raises the risk of further restrictions on cattle shipments from Mexico.

Takeaway: supply and trade flows. Limited supply and trade flows support US cattle prices. Watch for more movement rules if cases keep appearing.