title: Efficacy of LAIV-T on absentee rates in a school-based health center sample.
abstract: OBJECTIVE
  To determine the effectiveness of the intranasal LAIV-T in decreasing school absenteeism in a school-based vaccination initiative and to compare the acceptability of LAIV-T versus TIV among adolescents.
  
  
  METHODS
  This study was conducted within a single, urban community high school in the Fall of 2006. Participation was offered to all students in grades 6 to 10, aged 11 to 17 years. In December, school health center staff administered influenza vaccines to the students whose parents had returned written consent. Students received LAIV-T (n = 86), unless they were medically ineligible or objected; in those cases the injectable inactivated trivalent influenza vaccine (TIV) (n = 41) was offered. Students that did not receive either vaccination served as a control group (n = 234). Nonsuspension absences between January and June of 2007 were tracked for all three groups.
  
  
  RESULTS
  Students who received the LAIV-T had significantly less nonsuspension absences (mean absences = 5.53, SD = 5.00) compared to both the TIV (mean absences = 9.45, SD = 9.07) and control groups (mean absences = 7.97, SD =7.59).
  
  
  CONCLUSIONS
  LAIV-T was associated with a reduction in nonsuspension absences and was well accepted by students. Administration of LAIV-T may be a convenient and effective method to mass-immunize students in a school setting and help establish herd immunity within the community.
authors.affiliation: Children's Memorial Hospital, Northwestern University, Feinberg School of Medicine, General Academic Pediatrics, 2300 Children's Plaza, Box 16, Chicago, IL 60614-3363, USA. c-mears@northwestern.edu
authors.forename: Cynthia J
authors.initials: CJ
authors.lastname: Mears
authors.forename: Elisa N
authors.initials: EN
authors.lastname: Lawler
authors.forename: Lee D
authors.initials: LD
authors.lastname: Sanders
authors.forename: Ben Z
authors.initials: BZ
authors.lastname: Katz
mesh_terms: D000041:Absenteeism; D000293:Adolescent; D002641:Chicago; D002648:Child; D005260:Female; D006801:Humans; D007252:Influenza Vaccines / Q000627:therapeutic use*; D007251:Influenza, Human / Q000276:immunology* / Q000517:prevention & control; D008297:Male; D012572:School Health Services; D016896:Treatment Outcome
chemical_list: D007252:Influenza Vaccines