Health officials say pigs at the Fowlerville Family Fair have tested positive for swine flu.
As of Sunday night, no one in the county has reported getting sick.
The Fowlerville Fair Board isolated the infected pigs in hopes of limiting people's exposure to the virus. Now, the county health department says it is working with the fair board to notify exhibitors and guests that they may have been exposed to the illness.
Swine flu symptoms in humans are similar to those of seasonal flu, including nausea, vomiting, diarrhea, body aches, fever and runny nose and usually occur within three days of exposure. However, they can show up to 10 days after being exposed to the virus.