title: [Pediatric features of an influenza A seasonal outbreak and its burden in pediatric emergency rooms and pediatric departments].
abstract: OBJECTIVE
  To describe epidemiological features of an outbreak of flu A in hospitalized children and to evaluate the flu's burden in pediatric and pediatric emergencies departments.
  
  
  METHODS
  Multicenter prospective study in 2 pediatric university hospitals, in Marseille, France. Nasal swabs for flu A were performed in all the febrile children admitted during winter 2003-2004. Pre and postoutbreak admissions in pediatric and pediatric emergencies departments were compared too.
  
  
  RESULTS
  During the outbreak, 941 children were admitted and 605 were tested for flu A. Nasal swabs were positive in 111. Attack's rate was 11.8%. In these children, infants under 2 years were 66%. Respiratory forms were uncommon, although febrile seizures and digestive troubles were much frequent. The mean hospitalization duration was almost 4 days. Flu A outbreak finally increased the pediatric and pediatric emergencies departments rates of admission, of 48% and 37% respectively.
  
  
  CONCLUSIONS
  Flu is frequently underestimated in children, especially in infants. Clinical forms are various. Child's vaccination is questionable in France.
authors.affiliation: Urgences pédiatriques, CHU Nord, chemin des Bourrelly, 13915 Marseille cedex 20, France.
authors.forename: P
authors.initials: P
authors.lastname: Blanc
authors.forename: G
authors.initials: G
authors.lastname: Noël
authors.forename: J C
authors.initials: JC
authors.lastname: Dubus
authors.forename: J M
authors.initials: JM
authors.lastname: Garnier
authors.forename: B
authors.initials: B
authors.lastname: Chabrol
authors.forename: P
authors.initials: P
authors.lastname: Minodier
mesh_terms: D002675:Child, Preschool; D017281:Cost of Illness; D004196:Disease Outbreaks; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data; D005260:Female; D005602:France / Q000453:epidemiology; D006785:Hospitals, University; D006801:Humans; D007223:Infant; D009980:Influenza A virus / Q000472:pathogenicity; D007251:Influenza, Human / Q000191:economics* / Q000453:epidemiology*; D008297:Male; D011446:Prospective Studies; D012621:Seasons