Influenza in Swine

July, 2013

This early in the season we are reminded once again by recent cases of H3N2v influenza in humans at a county agricultural fair in the Midwest where pigs tested positive for the H3N2 virus, that pigs and people can be susceptible to the same strains of influenza. As always, biosecurity remains our best defense and works both ways by reducing or preventing infection of people by pigs and also the infection of pigs by people.

Pigs at events like fairs are at increased risk from exposure to other pigs and people that they don't routinely encounter. The fair season in South Carolina is not yet underway and the SC State Fair doesn’t begin until mid-October. Information for Fair/Show managers, exhibitors and also fair goers on recommended biosecurity practices that can minimize opportunity for disease transmission and still allow the education and entertainment opportunity provided by our fairs is available through the downloads and links posted below.

Clemson Livestock Poultry Health will continue to monitor any events involving H3N2 virus in swine. Should additional steps be necessary to protect animal health, we will post them here. Livestock Poultry Health is in close communication with SC DHEC in their efforts to protect public health.

State Veterinarian's recommendations for swine exhibitors:

  • Do not bring your pigs to the fair if you have sick pigs in the herd.
  • Avoid direct contact/handling of other swine at the fair.
  • Do not share equipment (buckets, brushes, etc.).
  • Wash your hands after handling animals.
  • Do not eat or drink in the barns.
  • Notify the show manager immediately if a pig gets sick while at the show.
  • After returning home, clean and disinfect all gear (show box, hoses, bucket, boots, etc.).
  • Separate pigs returning home and observe. If you notice signs of influenza in your pigs within 10 days of returning home, contact your herd veterinarian.
  • If you, or anyone in your family, have flu-like symptoms during or shortly after the fair, contact your physician or county health department.


Influenza Updates - National Pork Board Website
Measures to Minimize Influenza Transmission at Swine Exhibitions, 2013
Key Facts for People Exhibiting Pigs at Fairs - CDC (.pdf)

Fair Goers:

Preventing the Spread of Flu Between People and Pigs at Fairs - CDC Website

Fair/Show Managers:

Good Habits that Keep You and Your Pigs Healthy - National Pork Board (.pdf)
Keep Animals Healthy: Wash Your Hands - National Pork Board (.pdf)
Tips to Keep You and Pigs Healthy Poster - National Pork Board

H3N2v Human Information:

Flu in S.C. - SC DHEC Website