INDIANAPOLIS (AP) – A bird flu virus that’s a different strain than the one that ravaged turkey and chicken farms in the Midwest last summer has been found at a southern Indiana turkey farm, federal officials said Jan. 15, cautioning that a quick response could stem any larger outbreak.

The H7N8 flu strain was confirmed at a commercial turkey farm in Dubois County, about 70 miles west of Louisville, Kentucky, after samples from birds were taken when the farm saw a surge in turkey deaths, according to the U.S. Department of Agriculture.

The strain is highly contagious for birds; the USDA said no human infections with the viral strain have been detected.

State and federal officials said they confirmed the virus the evening of Jan. 14 and started euthanizing 60,000 turkeys.

Turkeys tested positive for bird flu at nine Indiana farms near the location where authorities first confirmed a strain different from the one that ravaged the U.S. poultry industry last summer, Indiana authorities said on Jan. 16.

Farmers began euthanizing turkeys at the new farms even before final results of whether the birds were infected with the H7N8 strain, said Denise Derrer, spokeswoman for the Indiana State Board of Animal Health.

Final results are expected soon from a government laboratory in Ames.

The nine farms are located in Dubois County, about 70 miles from Louisville, Kentucky.

All of the new infections are within a quarantine area set up around the first farm and that area has been expanded to four neighboring Indiana counties – Martin, Orange, Crawford and Daviess.

“Hopefully as we respond quickly to this virus we can get it contained and hopefully not see an extensive outbreak like we did last year,” said T.J. Myers, a veterinary services administrator with the USDA. “We’ll see how the coming days unfold.”

It’s a different strain than the H5N2 virus that cost turkey and chicken producers, mostly in the Upper Midwest, about 48 million birds.

Research has shown that wild birds’ northern migration introduced the H5N2 virus, which began to accelerate from farm to farm in the spring.

Indiana wildlife experts said that southern migration happened later than normal this year because of the mild weather, but it’s unclear “how much of a factor that has been in this,” according to Indiana Board of Animal Health spokeswoman Denise Derrer.

The H7N8 virus has not yet been found in wild birds, suggesting that the virus could have developed in wild birds that spent the winter in southern Indiana, USDA spokeswoman Andrea McNally said, adding that it’s too early to speculate about the origin and its association with migratory birds.

“We may know more once the remaining work on virus sequencing is completed, likely sometime next week,” Andrea McNally said.

There’s also no indication why H7N8 surfaced during winter months, but officials have said bird flu – any strain of it – could resurface anytime. A vaccine has been developed to cover the H5N2 strain, but it is not effective against the Indiana strain, Myers said, although new techniques could help with the development of a more specific vaccine if needed.

Indiana’s poultry industry brings in $2.5 billion a year, Derrer said, adding that the state leads the country in duck production, is No. 3 in egg production and fourth in turkeys.

“I can’t say it’s our worst nightmare, but it’s pretty close to it,” she said, noting there is a quarantine in place for commercial poultry farms and backyard flocks within a nearly 6-mile radius. “This is a very poultry-intense area of the state, and our poultry industry is pretty significant here in Indiana, so we don’t want to minimize the importance of this at all.”

In Iowa and Minnesota, where the H5N2 virus hit hardest, the poultry farms are restocking, especially in Iowa. But it’ll take most of 2016 for egg producers to completely replenish flocks, Iowa Secretary of Agriculture Bill Northey said. Egg prices have settled back to about $1.11 for a dozen in the Midwest, according to Urner Barry, a commodity tracking firm. That’s down from a peak of more than $2.88 a dozen in August.

Meanwhile, federal and state partners are working together on additional surveillance and testing in Indiana, which is part of bird flu response plans that were drafted last year. Indiana State Veterinarian Bret Marsh said there’s a “heightened sense of awareness about biosecurity” throughout the poultry industry now that bird flu has resurfaced.