RT Journal
T1 Update: Influenza a (h3n2)v transmission and guidelines—five states, 2011
JF JAMA
JO JAMA
YR 2012
FD February 22
VO 307
IS 8
SP 777
OP 779
DO 
UL http://dx.doi.org/
AB 
From August 17 to December 23, 2011, CDC received reports of 12 human infections with influenza A (H3N2)v viruses that have the matrix (M) gene from the influenza A (H1N1)pdm09 virus (formerly called swine-origin influenza A [H3N2] and pandemic influenza A [H1N1] 2009 viruses, respectively [see Box]). The 12 cases occurred in five states (Indiana, Iowa, Maine, Pennsylvania, and West Virginia), and 11 were in children.1,2 Six of the 12 patients had no identified recent exposure to swine. Three of the 12 patients were hospitalized, and all have recovered fully.