Bird flu found at 4th Indiana turkey farm
Avian influenza has been detected in a fourth commercial poultry flock in southern Indiana, state officials said Saturday
Laboratory testing of a second commercial flock of turkeys in Greene County has come back as presumptively positive for the virus
The samples are being verified at the U.S. Department of Agriculture's National Veterinary Services Laboratory in Iowa.
Another possible case was found about 5 miles (8 kilometers) away in Greene County earlier in the week
Two previous cases were found in adjacent Dubois County.
Officials have begun euthanizing the 15,200 birds at the latest farm to prevent the spread of the disease.
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