Author Contributions: Dr Sheridan had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Sheridan, Ware, Grimwood, Lambert.
Analysis and interpretation of data: Sheridan, Ware, Lambert.
Drafting of the manuscript: Sheridan, Lambert.
Critical revision of the manuscript for important intellectual content: Sheridan, Ware, Grimwood, Lambert.
Statistical analysis: Sheridan.
Administrative, technical, or material support: Sheridan, Ware.
Study supervision: Grimwood, Lambert.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Drs Grimwood and Lambert reported receiving honoraria for serving on the GlaxoSmithKline advisory boards for pneumonia and pneumonia conjugate vaccine, serving as an investigator on clinical studies sponsored by GlaxoSmithKline and sanofi-pasteur (both manufacturers of pertussis-containing vaccines), and serving on GlaxoSmithKline and sanofi-pasteur advisory boards for pneumococcal and influenza vaccines, respectively. Drs Sheridan and Ware did not report any disclosures.
Funding/Support: Dr Sheridan is supported by an Australian postgraduate award from the Australian government and a clinical scholarship from Queensland Children's Medical Research Institute. Dr Lambert is supported by an early career fellowship from the National Health and Medical Research Council and is a Queensland Children's Medical Research Institute senior research fellow.
Role of the Sponsor: None of the funding sources had a role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Additional Contributions: We recognize Christine E. Selvey, MBBS, MSc (senior director of Communicable Diseases Branch, Queensland Health), for supporting the research; Craig A. Davis, MAppSc, BA, MAppEpid, and Angela Wakefield, BHSc (both with Communicable Diseases Branch, Queensland Health), for data extraction; and Vicki Bryant, BNurs, and Madeline A. Hall, BNurs (both with the Immunisation Program, Queensland Health), for assisting in vaccination record interpretation. The persons listed in this section provided assistance while employed by Queensland Health and did not received additional financial compensation for their contributions.This article was corrected for errors on September 14, 2012.