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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Durante muchos años, la enfermedad de Chagas ha sido una entidad olvidada en nuestro medio, pese a que Colombia posee las condiciones apropiadas para que esta infección se desarrolle y se perpetúe en el tiempo.
Esto se refleja en el poco conocimiento de la enfermedad y en la existencia de muchos... individuos que sufren una pérdida significativa de su calidad y esperanza de vida, así como en costos importantes para el sistema de salud.
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People with Guinea worm disease (GWD) have no symptoms for about 1 year. Then, the person begins to feel ill. Symptoms can include the following:
Slight fever
Itchy rash
Nausea
Vomiting
Diarrhea
Dizziness
A blister then develops. This blister can form anywhere on the skin. However, the blis...ter forms on the lower body parts in 80%–90% of cases. This blister gets bigger over several days and causes a burning pain. The blister eventually ruptures, exposing the worm. The infected person may put the affected body part in cool water to ease the symptoms or may enter water to perform daily tasks, such as fetching drinking water. On contact with water, the worm discharges hundreds of thousands of larvae into the water.
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A parasitic disease caused by the larval stage of tapeworms in the Echinococcus.
The disease often starts without symptoms and this may last for years. The symptoms depend on the cyst's location and size.
Alveolar disease usually begins in the liver, but can spread to other parts of the body, such... as the lungs or brain.
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Chagas heart disease (CHD) affects approximately 30% of patients chronically infected with the protozoa Trypanosoma cruzi. CHD is classified into four stages of increasing severity according to electrocardiographic, echocardiographic, and clinical criteria. CHD presents with a myriad of clinical man...ifestations, but its main complications are sudden cardiac death, heart failure, and stroke. Importantly, CHD has a higher incidence of sudden cardiac death and stroke than most other cardiopathies, and patients with CHD complicated by heart failure have a higher mortality than patients with heart failure caused by other etiologies. Among patients with CHD, approximately 90% of deaths can be attributed to complications of Chagas disease. Sudden cardiac death is the most common cause of death (55%-60%), followed by heart failure (25%-30%) and stroke (10%-15%). The high morbimortality and the unique characteristics of CHD demand an individualized approach according to the stage of the disease and associated complications the patient presents with. Therefore, the management of CHD is challenging, and in this review, we present the most updated available data to help clinicians and cardiologists in the care of these patients. We describe the clinical manifestations, diagnosis and classification criteria, risk stratification, and approach to the different clinical aspects of CHD using diagnostic tools and pharmacological and non-pharmacological treatments.
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En 2015, l’OMS a publié la Stratégie et plan d’action sur WASH et les MTN à l’échelle mondiale qui propose de nouvelles méthodes de collaboration aux partenaires et les incite à investir dans les programmes en vue de soutenir la réalisation des objectifs de la feuille de route 2012 de l...’OMS contre les maladies tropicales négligées. Le cadre BEST, élaboré en 2016 par le réseau des ONG de développement chargées de la lutte contre les MTN, appuie la stratégie en proposant un cadre conceptuel utile pour
faire en sorte que toutes les activités nécessaires à l’élimination des MTN,
notamment l’approvisionnement en eau et l’assainissement ainsi que les
autres interventions essentielles d’élimination des MTN, soient menées à bien tout en garantissant la pérennité et le renforcement des systèmes de santé. Le cadre BEST peut être utilisé pour aider à planifier, financer et adopter des approches globales ciblant les groupes de population qui en ont le plus besoin.
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Background: The human helminth infections include ascariasis, trichuriasis, hookworm infections, schistosomiasis, lymphatic filariasis (LF) and onchocerciasis. It is estimated that almost 2 billion people worldwide are infected with helminths. Whilst the WHO treatment guidelines for helminth infecti...ons are mostly aimed at controlling morbidity, there has been a recent shift with some countries moving towards goals of disease elimination through mass drug administration, especially for LF and onchocerciasis. However, as prevalence is driven lower, treating entire populations may no longer be the most efficient or cost-effective strategy. Instead, it may be beneficial to identify individuals or demographic groups who are persistently infected, often termed as being “predisposed” to infection, and target treatment at them.
Methods: The authors searched Embase, MEDLINE, Global Health, and Web of Science for all English language, humanbased papers investigating predisposition to helminth infections published up to October 31st, 2017. The varying definitions used to describe predisposition, and the statistical tests used to determine its presence, are summarised. Evidence for predisposition is presented, stratified by helminth species, and risk factors for predisposition to infection are identified and discussed.
Results: In total, 43 papers were identified, summarising results from 34 different studies in 23 countries. Consistent evidence of predisposition to infection with certain species of human helminth was identified. Children were regularly found to experience greater predisposition to Ascaris lumbricoides, Schistosoma mansoni and S. haematobium than adults. Females were found to be more predisposed to A. lumbricoides infection than were males. Household clustering of infection was identified for A. lumbricoides, T. trichiura and S. japonicum. Ascaris lumbricoides and T. trichiura also showed evidence of familial predisposition. Whilst strong evidence for predisposition to hookworm infection was identified, findings with regards to which groups were affected were considerably more varied than for other helminth species.
Conclusion: This review has found consistent evidence of predisposition to heavy (and light) infection for certain human helminth species. However, further research is needed to identify reasons for the reported differences between demographic groups. Molecular epidemiological methods associated with whole genome sequencing to determine ‘who infects whom’ may shed more light on the factors generating predisposition.
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Website last accessed on 04.04.2023
A step-by-step guide for teachers on how to conduct a school deworming day!
Le présent manuel est un guide spécialisé sur les techniques et les méthodes de laboratoire à utiliser pour le diagnostic de l’ulcère de Buruli, une maladie provoquée par Mycobacterium ulcerans. Destiné aux techniciens et aux scientifi ques de laboratoire travaillant sur cette maladie, le ...présent manuel décrit les méthodes exactes à mettre en œuvre pour réaliser un certain nombre de tests diagnostiques. Les
procédures recommandées, utilisables dans l’ensemble du système de santé, sont adaptées aux services périphériques, des districts et centraux et ce, conformément aux ressources, compétences et matériel variables que l’on trouve classiquement dans les pays où l’ulcère de Buruli est endémique.
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Kinetoplastid parasites have caused human disease for millennia. Significant achievements have been made toward developing new treatments for leishmaniasis (particularly on the Indian subcontinent) and for human African trypanosomiasis (HAT). Moreover, the sustained decrease in the incidence of HAT... has made the prospect of elimination a tantalizing reality. Despite the gains, no new chemical or biological entities to treat kinetoplastid diseases have been registered in more than three decades, and more work is needed to discover safe and effective therapies for patients with Chagas disease and leishmaniasis. Advances in tools for drug discovery and novel insights into the biology of the host−parasite interaction may provide opportunities for accelerated progress. Here, we summarize the output from a gathering of scientists and physicians who met to discuss the current status and future directions in drug discovery for kinetoplastid diseases.
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Website last accessed on 09.04.2023
Human echinococcosis is a parasitic disease caused by tapeworms of the genus Echinococcus. More than one million people are affected by echinococcosis.
Website last accessed on 09.04.2023
La equinococosis humana es una enfermedad parasitaria causada por tenias del género Echinococcus. La equinococosis afecta a más de un millón de personas.
Website last accessed on 10.04.2023
Website last accessed on 14.04.2023
Les trématodes d'origine alimentaire sont des zoonoses et leurs agents pathogènes ne peuvent être transmis à l'homme qu'après avoir accompli un cycle de vie complexe, dont certaines étapes se déroulent dans un hôte animal intermédiaire. Les premiers h...ôtes intermédiaires de toutes les espèces de trématodes sont les escargots d'eau douce. Le deuxième hôte diffère selon l'espèce : dans le cas de la clonorchiase et de l'opisthorchiase, il s'agit de poissons d'eau douce, et dans le cas de la paragonimiase, de crustacés.
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Website last accessed ob 14.04.2023
Los trematodos transmitidos por los alimentos son zoonosis y sus patógenos sólo pueden transmitirse al ser humano tras completar un complejo ciclo vital, algunas de cuyas etapas tienen lugar en un hospedador animal intermediario. El primer hospedador interme...diario de todas las especies de trematodos son los caracoles de agua dulce. El segundo hospedador difiere según la especie: en el caso de la clonorquiasis y la opistorquiasis son los peces de agua dulce, y en el de la paragonimiasis, los crustáceos.
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Website last accessed on 14.04.2023
Трематодозы пищевого происхождения являются зоонозами, и их возбудители могут передаваться человеку только после завершения сложного жизне...нного цикла, некоторые стадии которого протекают в организме промежуточного животного хозяина. Первыми промежуточными хозяевами всех видов трематод являются пресноводные улитки. Второй хозяин бывает разным в зависимости от вида: в случае клонорхоза и описторхоза это пресноводные рыбы, а в случае парагонимоза — ракообразные.
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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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Website last accessed in 23.04.2023
Website last accessed on 22.05.2023
Youtube-Video
Leishmania- Ciclo de Vida