title: Seasonal influenza vaccination campaigns for health care personnel: systematic review.
abstract: BACKGROUND
  In Canada, vaccination coverage for seasonal influenza among health care personnel remains below 50%. The objective of this review was to determine which seasonal influenza vaccination campaign or campaign components in health care settings were significantly associated with increases in influenza vaccination among staff.
  
  
  METHODS
  We identified articles in eight electronic databases and included randomized controlled trials, controlled before-and-after studies and studies with interrupted time series designs in our review. Two reviewers independently abstracted the data and assessed the risk of biases. We calculated risk ratios and 95% confidence intervals for randomized controlled trials and controlled before-and-after studies and described interrupted time series studies.
  
  
  RESULTS
  We identified 99 studies evaluating influenza vaccination campaigns for health care workers, but only 12 of the studies were eligible for review. In nonhospital health care settings, including long-term care facilities, campaigns with a greater variety of components (including education or promotion, better access to vaccines, legislation or regulation and/or role models) were associated with higher risk ratios (i.e, favouring the intervention group). Within hospital settings, the results reported for various types of campaigns were mixed. Many of the criteria for assessing risk of bias were not reported.
  
  
  CONCLUSIONS
  Campaigns involving only education or promotion resulted in minimal changes in vaccination rates. Further studies are needed to determine the appropriate components and combinations of components in influenza vaccination campaigns for health care personnel.
authors.affiliation: Elisabeth Bruyère Research Institute, Ottawa, Ontario, Canada.
authors.forename: Po-Po
authors.initials: PP
authors.lastname: Lam
authors.forename: Larry W
authors.initials: LW
authors.lastname: Chambers
authors.forename: Donna M Pierrynowski
authors.initials: DM
authors.lastname: MacDougall
authors.forename: Anne E
authors.initials: AE
authors.lastname: McCarthy
mesh_terms: D015982:Bias; D016001:Confidence Intervals; D006282:Health Personnel; D006293:Health Promotion; D006761:Hospitals; D006801:Humans; D007252:Influenza Vaccines / Q000627:therapeutic use*; D007251:Influenza, Human / Q000517:prevention & control*; D016017:Odds Ratio; D012621:Seasons; D000078329:Workforce
chemical_list: D007252:Influenza Vaccines