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Shrinking risk profiles after deworming of children in Port Elizabeth, South Africa, with special reference to Ascaris lumbricoides and Trichuris trichiura

Ivan Müller, Stefanie Gall, Lindsey Beyleveld, Markus Gerber, Uwe Pühse, Rosa du Randt, Peter Steinmann, Leyli Zondie, Cheryl Walter, Jürg Utzinger
  • Ivan Müller http://orcid.org/0000-0002-6397-9979
    Swiss Tropical and Public Health Institute, Basel; University of Basel, Basel; Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
  • Stefanie Gall
    Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
  • Lindsey Beyleveld
    Department of Medical Laboratory Sciences, Nelson Mandela University, Port Elizabeth, South Africa
  • Markus Gerber
    Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
  • Uwe Pühse
    Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
  • Rosa du Randt
    Department of Human Movement Science, Nelson Mandela University, Port Elizabeth, South Africa
  • Peter Steinmann
    Swiss Tropical and Public Health Institute, Basel; University of Basel, Switzerland
  • Leyli Zondie
    Department of Medical Laboratory Sciences, Nelson Mandela University, Port Elizabeth, South Africa
  • Cheryl Walter
    Department of Human Movement Science, Nelson Mandela University, Port Elizabeth, South Africa
  • Jürg Utzinger
    Swiss Tropical and Public Health Institute, Basel; University of Basel, Basel, Switzerland | juerg.utzinger@swisstph.ch

Abstract

Risk maps facilitate discussion among different stakeholders and provide a tool for spatial targeting of health interventions. We present maps documenting shrinking risk profiles after deworming with respect to soil-transmitted helminthiasis among schoolchildren from disadvantaged neighbourhoods in Port Elizabeth, South Africa. Children were examined for soil-transmitted helminth infections using duplicate Kato-Katz thick smears in March 2015, October 2015 and May 2016, and subsequently treated with albendazole after each survey. The mean infection intensities for Ascaris lumbricoides were 9,554 eggs per gram of stool (EPG) in March 2015, 4,317 EPG in October 2015 and 1,684 EPG in March 2016. The corresponding figures for Trichuris trichiura were 664 EPG, 331 EPG and 87 EPG. Repeated deworming shrank the risk of soil-transmitted helminthiasis, but should be complemented by other public health measures.

Keywords

Albendazole; Ascaris lumbricoides; Trichuris trichiura; Risk profiling; South Africa

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Submitted: 2017-07-04 14:02:06
Published: 2017-11-27 15:52:59
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Copyright (c) 2017 Ivan Müller, Stefanie Gall, Lindsey Beyleveld, Markus Gerber, Uwe Pühse, Rosa du Randt, Peter Steinmann, Leyli Zondie, Cheryl Walter, Jürg Utzinger

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