A new flu virus that is occasionally jumping from pigs to people has done it again.
The U.S. Centers for Disease Control is reporting that the new swine influenza H3N2 virus has infected four people who attended a county fair in Indiana.
Indiana is one of six U.S. states in which human infections have been found since this variant H3N2 virus was first spotted at the end of last July.
The four latest cases were all people who had contact with pigs; they became infected in early-to-mid July after exhibiting pigs at a county fair in the northwestern part of the state.
The CDC says 12 pigs from the fair were tested for the virus and all were positive.
Dr. Michael Jhung of the CDC says while state health officials are still looking for additional cases, to date there doesn’t seem to have been human-to-human spread in this cluster of infections.