Avoiding the Will O’ the Wisp: Challenges in Measuring High Levels of Immunization Coverage with Precision
Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48503#.VD98U1fHRK0 Author(s) David W. Brown , Anthony H. Burton , Griffith Feeney , Marta Gacic-Dobo Affiliation(s) United Nations Children’s Fund, New York, USA . World Health Organization, Geneva, Switzerland . Scarsdale Solutions, New York, USA . World Health Organization, Geneva, Switzerland . ABSTRACT There have been tremendous improvements in immunization coverage since the Expanded Programme on Immunization was launched. We highlight inherent challenges in measuring immunization coverage with precision as coverage levels increase due to the sensitivity of coverage to the accuracy of target population estimates. In fact, when comparing a...