COMMUNITY EYE HEALTH JOURNAL | VOLUME 33 | NUMBER 110 | 2020
Technical Update
Areas of Africa endemic for Buruli ulcer (BU), caused by Mycobacterium ulcerans, also have a high prevalence of human immunodeficiency virus (HIV), with adult prevalence rates between 1% and 5% (Maps). However, there is limited information on the prevalence of BU–HIV coinfection.... Preliminary
evidence suggests that HIV infection may increase the risk of BU disease (1–3). In the Médecins Sans Frontières project in Akonolinga, Cameroon, HIV prevalence was approximately 3–6 times higher among BU patients than the regional estimated HIV prevalence (2). Similarly in Benin and Ghana, BU
patients were 8 times and 3 times respectively more likely to have HIV infection than those without BU (1, 3). Further study is needed to clarify this association and enhance knowledge about the prevalence ofBU–HIV coinfection in endemic areas.
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In areas of Mexico, Central America, and South America, where the Trypanosoma cruzi parasite is present in triatomine bugs, improved housing and spraying insecticide inside housing to eliminate the bugs has significantly decreased the spread of Chagas disease. Screening of blood donations for Chagas... is another important public health tool to help prevent spreading the disease through blood transfusions. Early detection and treatment of new cases, including mother-to-baby (congenital) cases, will also help reduce the burden of disease.
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Rabies is entirely preventable, and vaccines, medicines, tools and technologies have long
been available to prevent people from dying of dog-mediated rabies. Nevertheless, rabies still
kills about 60 000 people a year, of whom over 40% are children under 15, mainly in rural areas
of economically ...disadvantaged countries in Africa and Asia. Of all human cases, up to 99% are
acquired from the bite of an infected dog.
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The World Health Organization (WHO) convened a meeting of the Technical Advisory Group on Buruli ulcer at its headquarters in Geneva, Switzerland on 25 to 27 March 2019
Human African trypanosomiasis (HAT) has been an alarming global public health issue. The disease affects mainly poor and marginalized people in low-resource settings and is caused by two subspecies of haemoflagellate parasite, Trypanosoma brucei and transmitted by tsetse flies. Progress made in HAT ...control during the past decade has prompted increasing global dialogue on its elimination and eradication. The disease is targeted by the World Health Organization (WHO) for elimination as a public health problem by 2020 and to terminate its transmission globally by 2030, along-side other Neglected Tropical Diseases (NTD). Several methods have been used to control tsetse flies and the disease transmitted by them. Old and new tools to control the disease are available with constraints.
Currently, there are no vaccines available. Efforts towards intervention to control the disease over the past decade have seen considerable progress and remarkable success with incidence dropping progressively, reversing the upward trend of reported cases. This gives credence in a real progress in its elimination. This study reviews various control measures, progress and a highlight of control issues, vector and parasite barriers that may have been hindering progress towards its elimination.
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The trematodes Fasciola hepatica (also known as the common liver fluke or the sheep liver fluke) and Fasciola gigantica are large liver flukes (F. hepatica: up to 30 mm by 15 mm; F. gigantica: up to 75 mm by 15 mm), which are primarily found in domestic and wild ruminants (their main definitive host...s) but also are causal agents of fascioliasis in humans.
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Rabies is a neglected zoonotic disease with a global burden of approximately 59,000 human deaths a year. Once clinical symptoms appear, rabies is almost invariably fatal; however, with timely and appropriate post-exposure prophylaxis (PEP) consisting of wound washing, vaccine, and in some cases rabi...es immunoglobulin (RIG), the disease is almost entirely preventable. Access to PEP is limited in many countries, and when available, is often very expensive.
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Schistosomiasis is a chronic disease linked to poverty and is widely endemic, particularly in sub-Saharan Africa. For decades, the World Health Organization has called for a larger role of the primary health care system in schistosomiasis control, and its integration within the routine activities of... primary health care facilities. Here, we reviewed existing studies on the integration of schistosomiasis control measures within the primary health care system, more precisely at the health centre, and we analysed their outcomes.
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Snakebite envenoming is a neglected tropical disease (NTD) that is responsible for enormous suffering, disability and premature death on every continent. As over 5.8 billion people are at risk of encountering a venomous snake, it is not surprising but no less tragic that almost 7400 people every
da...y are bitten by snakes, and 220–380 men, women and children die as a result, adding up to about 2.7 million cases of envenoming and 8100–138 000 deaths a year.
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La enfermedad de Chagas, también llamada tripanosomiasis americana, sigue siendo endémica en 21 países de América Latina. Sin embargo, como consecuencia de las migraciones, la urbanización, la intensificación del turismo, la modificación de las estrategias agrícolas y el cambio climático, l...a enfermedad ha traspasado el marco rural y el ámbito latinoamericano que le dieron identidad durante decenios, y ha logrado instalarse en la periferia de las ciudades del área endémica y en países de América del Norte, Europa, Asia y Oceanía y transformarse en un problema de salud pública global.
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Infections by the soil-transmitted helminths (STH), including Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale/Necator americanus (hookworms), and Strongyloides stercoralis, disproportionately affect children around the world. Because of their transmission associated with poor sanita...ry conditions and inadequate hygiene practices, higher burden of disease is seen in children from developing countries from sub-Saharan Africa, Southeast Asia, and Latin America. Approximately 267 million preschool-age children (PSAC) and 568 million school-age children (SAC) worldwide are at risk of STH infection as well as impaired child growth and cognitive development from A. lumbricoides, T. trichiura, and hookworm infections, and death due to severe S. stercoralis infection. Thus, their control is a global health priority.
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Rabies is a public health problem in Asia and vaccine affordability is an issue.
There is no reduction in the number of persons seeking post-exposure prophylaxis.
The high cost of cell culture vaccines for intramuscular use is a limiting factor.
Intradermal rabies vaccination offers cost-effectiv...e alternative to intramuscular.
WHO recommended one week intradermal schedule will ensure good patient compliance.
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1 billion people are at risk of infection with leishmaniasis, a neglected disease strongly linked to poverty. There’s no single, simple cure: current treatments are complex and need to be adapted to the form of the disease and geographical region.
Leishmaniasis is an infectious disease caused by protozoan parasites of the genus, Leishmania. Protozoa are microscopic, single-celled organisms. The parasites that cause the disease are transmitted to people through the bites of certain species of infected sand flies.
El objetivo de esta nota conceptual y del marco que describe es la eliminación de un grupo de enfermedades transmisibles y los efectos negativos sobre la salud que generan que juntos crean una carga tangible en las personas afectadas, sus familias y comunidades, y en los sistemas de atención de sa...lud en toda la Región. Aunque no hay consenso sobre las mejores medidas que se deben usar para la salud de las personas y de acuerdo con la situación epidemiológica de un país, es habitual medir la carga de enfermedad mediante las tasas de enfermedad (incidencia, prevalencia, etc.), las tasas de mortalidad por enfermedad específica, las tasas de morbilidad y mortalidad comparativas, la distribución geográfica y los años de vida ajustados en función de la discapacidad (AVAD)…. Se analiza la situación epidemiológica actual, incluidos los datos sobre tasas de enfermedad o distribución geográfica para las enfermedades del cuadro 1. Hotez et al. (2008) fueron los primeros en examinar y comparar la carga de los AVAD en América Latina y el Caribe para las ETD, la infección por el VIH/sida, la malaria y la tuberculosis como era hace unos diez años atrás. Aunque la carga regional de tuberculosis, malaria y enfermedades infecciosas desatendidas (EID) es algo menor a la de hace diez años, se sigue perdiendo la posibilidad de trabajar (y de asistir a la escuela) debido a la enfermedad y muerte prematura o discapacidad, y la necesidad de acelerar los esfuerzos para eliminar las enfermedades es evidente en todas las comunidades en situación de vulnerabilidad.
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In one of his final essays, statesman and former United Nations secretary general Kofi Annan said, ‘Snakebite is the most important tropical disease you’ve never heard of’. Mr. Annan firmly believed that victims of snakebite envenoming should be recognised and afforded greater efforts at impro...ved prevention, treatment, and rehabilitation. During the last years of his life, he advocated strongly for the World Health Organisation (WHO) and the global community to give greater priority to this disease of poverty and its victims.
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L’objectif de cette note conceptuelle et du cadre dont elle donne les grandes lignes est l’élimination d’un groupe de MT et de leurs effets pénalisants sur la santé (maladies énumérées au tableau 1 ci-dessous) qui, pris globalement, génèrent une charge tangible pour les personnes touch...ées, pour leurs familles et leurs communautés, ainsi que pour les systèmes de soins de santé les prenant en charge sur l’ensemble de la Région.
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