title: Update: influenza activity--United States, September 30-December 1, 2007.
abstract: During September 30-December 1, 2007, influenza activity remained low in the United States. This report summarizes U.S. influenza activity since September 30, the start of the 2007-08 influenza season.
mesh_terms: D006801:Humans; D009980:Influenza A virus / Q000302:isolation & purification*; D009981:Influenza B virus / Q000302:isolation & purification*; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology