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Larval Source Management

Reduction of malaria vector mosquitoes in a large-scale intervention trial in rural Burkina Faso using Bti based larval source management

September 16, 2019 - 14:42 -- Open Access
Author(s): 
Peter Dambach, Till Baernighausen, Issouf Traoré, Saidou Ouedraogo, Ali Sié, Rainer Sauerborn, Norbert Becker and Valérie R. Louis
Reference: 
Malaria Journal 2019 18:311, 14 September 2019

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.

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Medical Condition: 

Nigeria should emphasize permanent control measures such as LSM

April 27, 2018 - 13:13 -- William Jobin

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.

Larval Source Management via Water Level Control

September 9, 2013 - 15:47 -- Jeff Juel

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 jeff.juel@jueltide.com.

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