 CDC: <http://www.cdc.gov/ncidod/diseases/flu/weekly.htm> MMWR report: <http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5139a3.htm> International:
 CDC : <http://www.cdc.gov/ncidod/diseases/flu/weekly.htm>  MMWR : <http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5139a3.htm>  International :