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Community-Directed Vector Control to Accelerate Onchocerciasis Elimination
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Journal Article
Community-Directed Vector Control to Accelerate Onchocerciasis Elimination
2024
Overview
Onchocerciasis, or river blindness, has historically been one of the most important causes of blindness worldwide, and a major cause of socio-economic disruption, particularly in sub-Saharan Africa. Its importance as a cause of morbidity and an impediment to economic development in some of the poorest countries in the world motivated the international community to implement several programs to control or eliminate this scourge. Initially, these involved reducing transmission of the causative agent Onchocerca volvulus through controlling the vector population. When ivermectin was found to be a very effective drug for treating onchocerciasis, the strategy shifted to mass drug administration (MDA) of endemic communities. In some countries, both vector control and ivermectin MDA have been used together. However, traditional vector control methods involve treating rivers in which the black fly vectors breed with insecticides, a process which is expensive, requires trained personnel to administer, and can be ecologically harmful. In this review, we discuss recent research into alternatives to riverine insecticide treatment, which are inexpensive, ecologically less harmful, and can be implemented by the affected communities themselves. These can dramatically reduce vector densities and, when combined with ivermectin MDA, can accelerate the time to elimination when compared to MDA alone.
Publisher
MDPI AG,MDPI
Subject
Africa South of the Sahara - epidemiology
/ Animals
/ Control
/ Disease Eradication - methods
/ Humans
/ Insect Vectors - parasitology
/ Insecticides - administration & dosage
/ Ivermectin - administration & dosage
/ Ivermectin - therapeutic use
/ Methods
/ Onchocerca volvulus - drug effects
/ Onchocerciasis - drug therapy
/ Onchocerciasis - epidemiology
/ Onchocerciasis - prevention & control
/ Onchocerciasis - transmission
/ Onchocerciasis, Ocular - drug therapy
/ Onchocerciasis, Ocular - epidemiology
/ Onchocerciasis, Ocular - prevention & control
/ Onchocerciasis, Ocular - transmission
/ Review
/ Rivers
/ Simulium
/ trap
/ Vectors
