The first cases of influenza A (H3N2) variant (H3N2v) virus infection this year were reported in June 2013. http://www.bt.cdc.gov/HAN/han00351.asp
The first cases of influenza A (H3N2) variant (H3N2v) virus infection this year were reported in June 2013. http://www.bt.cdc.gov/HAN/han00351.asp