The symptoms of H3N2 include fever, cough and runny nose, according to the Centers for Disease Control and Prevention. Nausea, diarrhea, vomiting and body aches are other possible symptoms.
H3N2 is a variation of the influenza virus that normally affects pigs but that has infected humans in some cases, explains the CDC. The virus spreads to humans through contact with infected pigs, according to FLU.gov, and there have been cases in which human-to-human transmission has occurred. In 2011 and 2012, the virus infected 321 people in the United States, while 19 people developed it in 2013. As of October 2014, two people have contracted H3N2 in 2014. One H3N2-related death has been reported over the four-year span. The seasonal influenza vaccine does not provide protection against the H3N2 strain.