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Deworming and Development: Asking the Right Questions, Asking the Questions Right

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Author Info

  • Bleakley, Hoyt
  • Miguel, Edward
  • Kremer, Michael R.
  • Jukes, Matthew
  • Bundy, Donald A. P.

Abstract

Two billion people are infected with intestinal worms. In many areas, the majority of schoolchildren are infected, and the World Health Organization (WHO) has called for school-based mass deworming. The key area for debate is not whether deworming medicine works—in fact, the medical literature finds that treatment is highly effective, and thus the standard of care calls for treating any patient known to harbor an infection. As the authors of the Cochrane systematic review point out, a critical issue in evaluating current soil-transmitted helminth policies is whether the benefits of deworming exceed the costs or whether it would be more prudent to use the money for other purposes. While in general we think the Cochrane approach is very valuable, we argue below that many of the underlying studies of deworming suffer from three critical methodological problems: treatment externalities in dynamic infection systems, inadequate measurement of cognitive outcomes and school attendance, and sample attrition. We then argue that the currently available evidence from studies that address these issues is consistent with the consensus view expressed by other reviews and by policymakers that deworming is a very cost-effective way to increase school participation and has a high benefit to cost ratio.

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File URL: http://dash.harvard.edu/bitstream/handle/1/4460861/2627944.pdf
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Bibliographic Info

Paper provided by Harvard University Department of Economics in its series Scholarly Articles with number 4460861.

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Date of creation: 2009
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Publication status: Published in PLoS Neglected Tropical Diseases
Handle: RePEc:hrv:faseco:4460861

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  1. Edward Miguel & Michael Kremer, 2004. "Worms: Identifying Impacts on Education and Health in the Presence of Treatment Externalities," Econometrica, Econometric Society, Econometric Society, vol. 72(1), pages 159-217, 01.
  2. Hoyt Bleakley, 2007. "Disease and Development: Evidence from Hookworm Eradication in the American South," The Quarterly Journal of Economics, MIT Press, MIT Press, vol. 122(1), pages 73-117, 02.
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Cited by:
  1. Rodolfo Manuelli, 2011. "Disease and Development: The Role of Human Capital," Working Papers, Human Capital and Economic Opportunity Working Group 2011-008, Human Capital and Economic Opportunity Working Group.

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