Malaria remains one of the most important causes of morbidity and death in sub-Saharan Africa. Along with early diagnosis and treatment of malaria cases and intermittent preventive treatment in pregnancy (IPTp), vector control is an important tool in the reduction of new cases. Alongside the use of long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS), targeting the vector larvae with biological larvicides, such as Bacillus thuringiensis israelensis (Bti) is gaining importance as a means of reducing the number of mosquito larvae before they emerge to their adult stage. This study presents data corroborating the entomological impact of such an intervention in a rural African environment.
Larval Source Management
Given that the drop in malaria prevalence in Nigeria has been very modest in the last 5 years, it would be wise to take another look at the methods being used - which unfortunately are ephemeral (indoor sprays, bednets and drugs) and must be repeated every year. The lack of emphasis on permanent measures, such as Larval Source Management, is a key to the problem. With the ephemeral methods, because the national budget for malaria control can only increase slowly, thus the program will only increase slowly.
I am pleased to send you this brief summary of our most recent and interesting African Malaria Dialogue, held during a luncheon meeting on Wednesday 9 October at the Harvard School of Public Health in Boston.
I am a civil engineer with experience in drainage and flood control. Drainage and flood control infrastructure can be an important part of integrated pest management as a means for larval source management.
Unfortunately, the related drainage infrastructure for a diked area typically has a number of drawbacks: 1) during dry periods, the drainage system for the low-lying land protected by the dike will inevitably include areas of stagnant water; 2) the lowered water table will cause the land to subside - which will make gravity drainage more difficult and produce more stagnant water; and 3) wetland environments will be severely degraded, harming flora and fauna.
Diked areas adjacent to tidally-influence watercourses can use tidal water level variations to significantly reduce stagnant water in the drainage system; reduce subsidence; and enhance wetlands.
Click on Read More for a paper I wrote which was published the August edition of Outlooks on Pest Management.
For a copy of the entire article in pdf format including photos, please contact me via e-mail at email@example.com.