Deadly bird flu reappears in US commercial poultry flocks in Utah and South Dakota

abcnews.go.com:

Highly pathogenic bird flu has made its first appearances in U.S. commercial poultry flocks this season, affecting one turkey farm in South Dakota and one in Utah

MINNEAPOLIS — Highly pathogenic bird flu has made its first appearances in U.S. commercial poultry flocks this season, affecting one turkey farm in South Dakota and one in Utah and raising concerns that more outbreaks could follow.

The U.S. Department of Agriculture reported that avian influenza, which is deadly to commercial poultry, was confirmed in a flock of 47,300 turkeys in Jerauld County, South Dakota, on Oct. 4 and at a farm with 141,800 birds in Utah's Sanpete County last Friday.

The outbreaks are the first reported among commercial flocks in the U.S. since the disease struck two turkey farms in the Dakotas in April. Infected flocks are normally destroyed to prevent the flu's spread, and then the farms are decontaminated.

Before last week, the only reports of bird flu in recent months in the U.S. in recent months were sporadic appearances in backyard flocks or among wild birds such as ducks, geese and eagles. While wild birds often show no symptoms of avian influenza, infections in them are a concern to the poultry industry because migrating birds can spread the disease to vulnerable commercial flocks.

“I don’t doubt that we will have more cases," South Dakota State Veterinarian Beth Thompson said in an interview Tuesday. “I would be very pleasantly surprised if we're done because migration is just starting.”

Bird flu last year cost U.S. poultry producers nearly 59 million birds across 47 states, including egg-laying chickens and turkeys and chickens raised for meat, making it the country's deadliest outbreak ever, according to USDA figures. The