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The Scientific World Journal
Volume 2015, Article ID 248678, 8 pages
http://dx.doi.org/10.1155/2015/248678
Research Article

Impact of Pneumococcal Conjugate Vaccine on Pediatric Tympanostomy Tube Insertion in Partial Immunized Population

1Department of Otolaryngology Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
2School of Medicine, National Yang-Ming University, Taipei, Taiwan
3Institute of Public Health and Community Medicine Research Center, National Yang-Ming University, Taipei, Taiwan
4Department of Otolaryngology Head and Neck Surgery, Mackay Memorial Hospital, Taipei, Taiwan
5Department of Audiology and Speech Language Pathology and School of Medicine, Mackay Medical College, New Taipei City, Taiwan

Received 11 December 2014; Accepted 26 February 2015

Academic Editor: Eduardo G. Pérez-Yarza

Copyright © 2015 Mao-Che Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective. To investigate the impact of seven-valent pneumococcal conjugate vaccine on tube insertions in a partial immunized pediatric population. Study Design. Retrospective ecological study. Methods. This study used Taiwan National Health Insurance Research Database for the period 2000–2009. Every child under 17 years old who received tubes during this 10-year period was identified and analyzed. The tube insertion rates in different age groups and the risk to receive tubes in different birth cohorts before and after the release of the vaccine in 2005 were compared. Results. The tube insertion rates for children under 17 years of age ranged from 21.6 to 31.9 for 100,000 persons/year. The tube insertion rate of children under 2 years old decreased significantly after 2005 in period effect analysis (β = −0.074, P < 0.05, and the negative β value means a downward trend) and increased in children 2 to 9 years old throughout the study period (positive β values which mean upward trends, P < 0.05). The rate of tube insertion was lower in 2004-2005 and 2006-2007 birth cohorts than that of 2002-2003 birth cohort (RR = 0.90 and 0.21, 95% CI 0.83–0.97 and 0.19–0.23, resp.). Conclusion. The seven-valent pneumococcal conjugate vaccine may reduce the risk of tube insertion for children of later birth cohorts. The vaccine may have the protective effect on tube insertions in a partial immunized pediatric population.