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Avoiding the Will O’ the Wisp: Challenges in Measuring High Levels of Immunization Coverage with Precision

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48503#.VD98U1fHRK0

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 across groups at high levels of coverage, error in target population estimates can obscure differences in immunization coverage.
Cite this paper
Brown, D. , Burton, A. , Feeney, G. and Gacic-Dobo, M. (2014) Avoiding the Will O’ the Wisp: Challenges in Measuring High Levels of Immunization Coverage with Precision. World Journal of Vaccines, 4, 97-99. doi: 10.4236/wjv.2014.43012. 
 

[1] Bland, J. and Clements, J. (1998) Protecting the World’s Children: The Story of WHO’s Immunization Programme. World Health Forum, 19, 162-173.
[2] Siegel, J.S. and Swanson, D.A. (2004) The Methods and Materials of Demography. 2nd Edition, Elsevier Science & Technology, San Francisco, USA.
[3] Population Reference Bureau. (2001) Understanding and Using Population Projections. Washington, DC.
http://www.prb.org/pdf/UnderStndPopProj_Eng.pdf on 30 April 2014
[4] Global Vaccine Action Plan, 2011-2020.
http://www.who.int/immunization/global_vaccine_action_plan/GVAP_doc_2011_2020/en/
[5] Jerven, M. (2013) Poor Numbers: How We Are Misled by African Development Statistics and What to Do about It. Cornell University Press, Ithaca, NY and London.                                                   eww141016lx
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