title: Update: influenza activity--United States, March 26-April 1, 2006.
abstract: During March 26-April 1, 2006, the number of states reporting widespread influenza activity decreased to 13. Fourteen states reported regional activity, 12 reported local activity, 10 reported sporadic activity, and one reported no activity.
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; D014481:United States / Q000453:epidemiology