oa Central African Journal of Medicine - Bilharzia: The necessity for control measures on irrigated estates: The importance of a planned irrigation system in the biological control of snail vectors in areas where the topography is suitable and site selection is possible

Volume 2, Issue 4
  • ISSN : 0008-9176



1. Bilharzia and its endemicity is discussed generally. The need for control of the disease is stressed. 2. Methods of control are outlined and discussed. 3. The influence of the rate of water flow on the distribution of snails in nature and on irrigated estates is descriptionbed. Its use on irrigated estates is advocated as a means of controlling snail infestation. 4. An illustrative map is provided to demonstrate the topography of an area where the rate of water flow operates in nature as a controlling influence on snails, and where the institution of irrigation will result in a serious increase in their numbers, and consequently, unless measures are taken to prevent this occurrence, bilharzia. Control of snails en irrigated estates in such an area, utilising the rate of water flow, may be possible provided site selection combined with correct surveying and engineering is employed. Recommendations are given for the guidance of surveyors and engineers.

Loading full text...

Full text loading...


Article metrics loading...


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error