Update: influenza activity--United States, 1993-94 season.
From mid-November through December 1993, influenza activity in the United States increased. This report summarizes surveillance information regarding influenza activity in the United States from October 3, 1993, through January 1, 1994.
D006801:Humans; D009980:Influenza A virus; D009981:Influenza B virus; D007251:Influenza, Human / Q000453:epidemiology*; D012621:Seasons; D014481:United States / Q000453:epidemiology