BHC has been discontinued since 1.4.1997 in view of its adverse environmental effects. Whenever an honest effort has been made to spray insecticides systematically, malaria has either been brought down, or at least kept at low levels. This is done by entomological teams. They carry out susceptibility tests and suggest appropriate insecticide to be used in particular areas. The collection and examination of blood smears is a key element of the Modified Plan of Operation.
Great emphasis is laid on the presumptive and radical treatment of cases.
As these areas will not be under regular spraying, active and passive surveillance operations will have to be carried out vigorously every fortnight. All malaria positive cases are to be investigated. This may include mass surveys. Drug distribution centres and fever treatment depots With the increasing number of malaria cases, the demand for antimalarial drugs has increased tremendously. It became clear antimalarial drugs has increased tremendously.