Malaria Control Trends On Impounded Waters Of The Tennessee Valley PDF Download

The impoundage of flowing streams profoundly alters the biology of the affected waters. One of the changes may be a vast increase in the potential for anopheline mosquito production unless appropriate control works and procedures are planned, designed, and operated. The choice is, therefore, between the probability of a disastrous "man-made" increase in transmission of malaria or a successful resolution of the continuing conflict between adverse biological pressures and control practices. There is no ready-made formula which is applicable under all circumstances to all impoundments, for variations in ecological conditions and the primary purposes of water control are practically infinite. Hence, plans for malaria control on impounded water, though following basic principles, must be specifically adapted in method to each particular project by the selection of specifically applicable alternatives as delineated by local ecology and objectives. This publication records a comprehensive body of experience in the design and operation of programs of malaria prevention on impounded water and, while certain principles here presented seem to have been established with at least a measure of finality, this manual is no final word on the subject. On the contrary, it is essentially a report of progress submitted for such value as it may have to others confronted by similar tasks.