Three pigs exhibited at the North Dakota State Fair last week have tested positive for an influenza strain that can be transmitted to humans.
The North Dakota Department of Agriculture reports the three pigs appeared healthy when they were tested on arrival at the fairgrounds, but became ill while at the Fair.
They were removed from the fairgrounds at the recommendation of veterinarians.
This type of influenza can be spread to humans in the same way influenza is spread among people - by contact with droplets created through sneezing.
Officials say there have been no reported human cases of influenza related to the pigs.
And they say it's the first time something like this has happened at the State Fair.
If you visited the pig barn at the Fair and develop flu-like symptoms, tell your doctor about the potential exposure to the pigs.
State Veterinarian Susan Keller says swine producers concerned about their pigs having contracted the disease at the Fair should contact a veterinarian.