title: From the Centers for Disease Control and Prevention. Update: respiratory syncytial virus activity--United States, 1997-98 season.
mesh_terms: D004196:Disease Outbreaks; D006801:Humans; D011159:Population Surveillance; D018357:Respiratory Syncytial Virus Infections / Q000453:epidemiology*; D012621:Seasons; D014481:United States / Q000453:epidemiology