title: Disruption of services in an internal medicine unit due to a nosocomial influenza outbreak.
abstract: OBJECTIVE
  To describe a nosocomial influenza A outbreak, how it was managed, what impact it had on subsequent delivery of health care, and the additional charges attributable to it
  
  
  METHODS
  Prospective cohort study and microbiological investigation.
  
  
  METHODS
  One internal medicine unit in an acute care, university-affiliated hospital.
  
  
  METHODS
  Twenty-three patients and 22 staff members from February 28 to March 6, 1999.
  
  
  RESULTS
  Attack rates were 41% (9 of 22) among patients and 23% (5 of 22) among staff members, with 3 of 14 cases being classified as "certain." The influenza virus isolates were typed as A/SYDNEY/5/97 (H3N2). The index case was a patient who shared a room with the first nosocomial case. Vaccination rates for influenza virus were 43% (10 of 23) among patients and 36% (8 of 22) among staff members. The outbreak resulted in staff members' taking 14 person-days of sick leave. Furthermore, 8 scheduled admissions were postponed and all emergency admissions were suspended for 11 days. Hospital charges attributable to the influenza outbreak totaled $34,179 and the average extra charge per infected patient was $3,798.
  
  
  CONCLUSIONS
  Nosocomial influenza outbreaks increase charges and alter the quality of care delivered in acute care settings. Strategies for their prevention need to be evaluated in acute care settings.
authors.affiliation: Comité de Lutte contre les Infections Nosocomiales, Marseille, France.
authors.forename: Catherine
authors.initials: C
authors.lastname: Sartor
authors.forename: Christine
authors.initials: C
authors.lastname: Zandotti
authors.forename: Fanny
authors.initials: F
authors.lastname: Romain
authors.forename: Véronique
authors.initials: V
authors.lastname: Jacomo
authors.forename: Sophie
authors.initials: S
authors.lastname: Simon
authors.forename: Catherine
authors.initials: C
authors.lastname: Atlan-Gepner
authors.forename: Roland
authors.initials: R
authors.lastname: Sambuc
authors.forename: Bernard
authors.initials: B
authors.lastname: Vialettes
authors.forename: Michel
authors.initials: M
authors.lastname: Drancourt
mesh_terms: D003428:Cross Infection / Q000453:epidemiology* / Q000517:prevention & control / Q000821:virology; D004196:Disease Outbreaks / Q000517:prevention & control; D005602:France / Q000453:epidemiology; D006757:Hospital Units / Q000458:organization & administration*; D006779:Hospitals, Public / Q000458:organization & administration; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D007388:Internal Medicine / Q000458:organization & administration*; D016273:Occupational Exposure / Q000706:statistics & numerical data; D011446:Prospective Studies; D011787:Quality of Health Care; D018582:Sick Leave; D000078329:Workforce