Update: influenza activity--United States, January 29-February 4, 2006.
During January 29-February 4, 2006, the number of states reporting widespread influenza activity increased to nine. Twenty-one states reported regional activity, 13 reported local activity, and six reported sporadic activity.
D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology