Onchocerca volvulus transmitted by repeated bites of infected blackflies (Simulium spp.). These blackflies breed along fast-flowing rivers and streams, close to remote villages located near fertile land where people rely on agriculture.
There is a need to reinforce skills of national and district... health workers to know and identify the disease, understand the risk factors according to the context and living conditions of the affected communities, and promote the implementation of public health interventions. With the shift from control to elimination, large areas in Africa require mapping to assess whether transmission is active, and treatment required. A sampling strategy named Onchocerciasis elimination mapping has been developed to help countries conduct those assessments and start treatment where needed.
This course examines the epidemiology of Onchocerciasis, clinical aspects, impact, diagnosis, treatment and control, elimination, public health interventions and role of community health workers
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Onchocerciasis – or “river blindness” – is a parasitic disease caused by the filarial worm Onchocerca volvulus transmitted by repeated bites of infected blackflies (Simulium spp.). These blackflies breed along fast-flowing rivers and streams, close to remote villages located near fertile lan...d where people rely on agriculture.
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Onchocerciasis – or “river blindness” – is a parasitic disease caused by the filarial worm
Onchocerca volvulus. It is transmitted through the bites of infected blackflies (Simulium spp.) that
breed in fast-flowing rivers and streams, mostly in remote villages located near fertile land wher...e
people rely on agriculture.
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Following the publication of Guidelines on certification of elimination of human onchocerciasis in 2001 by the World Health Organization (WHO), these are the first evidence-based guidelines developed by NTD Department according to the international standards. They provide a set of recommendations th...at would guide national programme managers in collaboration with their respective oversight committees on when to stop mass drug administration (MDA) and conduct post-treatment surveillance (PTS) activities for a minimum period of 3 to 5 year before confirming the interruption of transmission of Onchocerca volvulus parasite and hence its elimination. They also include steps to undertake for verification of elimination of transmission of the parasite in the whole endemic country by the International Verification Team (IVT) prior to the official acknowledgement by WHO Director General.
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Onchocerciasis, or river blindness, is a neglected tropical disease (NTD) caused by the parasitic worm Onchocerca volvulus. It is transmitted through repeated bites by blackflies of the genus Simulium. The disease is called river blindness because the blackfly that transmits the infection lives and ...breeds near fast-flowing streams and rivers, mostly near remote rural villages. The infection can result in visual impairment and sometimes blindness. Additionally, onchocerciasis can cause skin disease, including intense itching, rashes, or nodules under the skin. Worldwide onchocerciasis is second only to trachoma as an infectious cause of blindness.
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Les présentes lignes directrices ont pour objet de préparer les pays d’endémie à arrêter l’AMM à l’issue du traitement, à passer à la surveillance post-thérapeutique ainsi qu’à confirmer l’interruption de la transmission à l’issue de la phase 2 et à débuter la surveillance p...ost-élimination.
Le but est de fournir un outil actualisé pour atteindre et vérifier l’élimination de la
transmission d’Ovolvulus à l’issue des programmes d’élimination de l’onchocercose qui utilisent principalement l’AMM.
Les objectifs sont de :
• formuler des recommandations basées sur des preuves à l’intention des prestataires de soins et des décideurs en matière de politique pour démontrer et confirmer l’interruption de la transmission d’O. volvulus avant, pendant et après la surveillance post-thérapeutique ;
• informer les utilisateurs finaux des procédures nécessaires pour vérifier l’élimination de l’onchocercose humaine.
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The objective of this paper is to summarise and critically review the available data about onchocerciasis in Mozambique, in order to report epidemiological and clinical aspects related to the disease and identify gaps in knowledge. The paper is intended to raise awareness of the existence and import...ance of this disease and to define research priorities
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In response to the recent publication “Is onchocerciasis elimination in Africa feasible by 2025: a perspective based on lessons learnt from the African control programmes” by Dadzie et al., it is important to clarify and highlight the positive and unequivocal research and operational contributio...ns from the American experience towards the worldwide elimination of human onchocerciasis (river blindness).
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BMJ Open 2021;11:e042279. doi:10.1136/bmjopen-2020-042279. Neglected tropical diseases tend to cluster in the same poor populations, and to make progress with their control, they will have to be dealt with in an integrated manner. Peptide microarrays may be a solution to tese problems, where diagnos...is for co-infection can be detected simultaneously using the one tool.
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BMC Res Notes (2016) 9:182 DOI 10.1186/s13104-016-1993-7
Onchocerciasis used to be an important public health problem in Africa, with over 37 million people infected and millions suffering from debilitating skin disease, terrible itching, impaired vision and
blindness. But the epidemiological situation has improved dramatically over the last two decades.... Community directed treatment with ivermectin has effectively brought the disease under control in most endemic areas where onchocerciasis is no longer a public health risk.
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En la presente guía de capacitación se explica cómo reconocer los signos y los síntomas de las enfermedades tropicales desatendidas de la piel a partir de sus características visibles. También contiene información sobre cómo diagnosticar y tratar los problemas frecuentes de la piel que puede... encontrar el personal de salud de primera línea.
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Using Epidemiology to Support Primary Health Care. Updated version of the WHO handbook published in the early 1990's entitled: Manual of Epidemiology for District Health Management or those with an interest in applied epidemiology in primary health care and district health systems
Comment reconnaître les maladies tropicales négligées selon les altérations de la peau : guide de formation à l’usage du
personnel sanitaire de première lignes [Recognizing neglected tropical diseases through changes on the skin: a training
guide for front-line health workers]
African Health Sciences 2013; 13(2): 219 - 232 http://dx.doi.org/10.4314/ahs.v13i2.4
The Onchocerciasis Control Programme in West Africa (OCP) undertook regional and large scale frght against onchocerciasis in West Africa in 1974 using a vector control strategy. By 2002 OCP had succeeded in eliminating the disease as a public health, socio-economic and development problem in 10 out ...of I I countries. This campaign was highly technical and expensive. ln 1987, Merck & Co.,lnc. committed themselves to provide ivermectin free of charge for as long as needed to onchocerciasis endemic countries. This made it possible to envrsage the extension of onchocerciasis control activities to the remaining endemic countries in Africa.
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Coordinated Use of Anthelminthic Drugs in Control Interventions: a Manual for Health Professionals and Programme Managers