A pig virus previously found only in Asia and Europe has moved to the United States, killing pigs in 15 states, including Indiana.
The Indiana State Department of Health has identified 12 cases of swine flu this year.
As farmers begin to harvest crops that have been devastated by the drought, many are looking for ways to avoid similar difficulties next year.
Pigs are back at the state fair after being removed because of swine flu concerns.
State officials say they still haven't confirmed any human-to-human transmission of the disease.
The swine barn is closed after a number of pigs started showing flu symptoms. Several people who came into contact with the pigs are also being tested.