Ecological studies on the intermediate host snails and the relevance to schistosomiasis control

Henry Madsen About the author

Abstract

A detailed knoledge of distribution patterns schistosome intermediate hsts and their populations dynamics and factors affecting these patterns will provide useful information about the possibilities and desirability of conducting snail control measures in various transmission situations. On the basis of various case studies the association between the occurence of human water contacts and the presence of schistosome intermediate hosts or infections in the intermediate hosts is illustrated. Other parameters affecting snail distribution patterns and density fluctuations are discussed. It is concluded that ecological studies on the intermediate host are extremely relevant, either to optimally apply existing control measures or to develop alternative measures of snail control, such as ecological or biological control.

schistosomiasis control; intermediate host snails; ecological studies


ABSTRACT

Ecological studies on the intermediate host snails and the relevance to schistosomiasis control

Henry Madsen1

WHO Collaborating Centre for Applied Medical Malacology and Schistosomiasis Control, Danish Bilharziasis Laboratory, Charlottenlund, Denmark

A detailed knoledge of distribution patterns schistosome intermediate hsts and their populations dynamics and factors affecting these patterns will provide useful information about the possibilities and desirability of conducting snail control measures in various transmission situations. On the basis of various case studies the association between the occurence of human water contacts and the presence of schistosome intermediate hosts or infections in the intermediate hosts is illustrated. Other parameters affecting snail distribution patterns and density fluctuations are discussed. It is concluded that ecological studies on the intermediate host are extremely relevant, either to optimally apply existing control measures or to develop alternative measures of snail control, such as ecological or biological control.

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Publication Dates

  • Publication in this collection
    04 June 2009
  • Date of issue
    1992
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