Update: influenza activity--United States, March 12-18, 2006.
During March 12-18, 2006, the number of states reporting widespread influenza activity decreased to 23. Fourteen states reported regional activity, eight reported local activity, and five reported sporadic activity.
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