Health authorities urge people to take precautions to avoid swine flu at local and local fairs in Michigan.
Swine influenza is a respiratory disease in pigs caused by influenza A viruses. Swine flu viruses usually do not infect humans, but human infections are reported. Precautions to prevent swine flu include avoiding eating or drinking in grain or displaying rings.
The Michigan Department of Health and Human Services claims that 17 people last year from six countries, including three from Michigan, were ill with various influenza viruses after having had direct or indirect contact with pigs at fairs and exhibits. Infections are mostly among children.
Symptoms in humans are similar to those of seasonal influenza viruses and may include fever, sore throat and difficulty in breathing.