Gambiense human African trypanosomiasis is a deadly infectious disease affecting West and Central Africa, South Sudan and Uganda, and transmitted between humans by tsetse flies. The disease has caused several major epidemics, the latest one in the 1990s. Thanks to recent innovations such as rapid di...agnostic tests for population screening, a single-dose oral treatment and a highly efficient vector control strategy, interruption of transmission of the causative parasite is now within reach. If indeed gHAT has an exclusively human reservoir, this could even result in eradication of the disease. Even if there were an animal reservoir, on the basis of epidemiological data, it plays a limited role. Maintaining adequate postelimination surveillance in known historic foci, using the newly developed tools, should be sufficient to prevent any future resurgence.
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Human African trypanosomiasis is caused by Trypanosoma brucei gambiense in West and Central Africa and by T. brucei rhodesiense in East Africa; both species are endemic in Uganda. Trypanosoma brucei gambiense accounts for 98% of all cases of African trypanosomiasis, and T. brucei rhodesiense account...s for 2%. African trypanosomiasis has been targeted for eradication by the World Health Organization (WHO) and, as a result of control efforts, there has been a dramatic decrease (> 95%) in the number of reported cases worldwide.
Professional version as well as patient education
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Please find the latest interactive infographic on the websitehttp://www.humanitarianresponse.info/fr/operations/west-and-central-africa/infographies-interactives. Click any chart or on the map to filter the data set
Elsevier Provides Free Online Access to Medical Information for West African Countries Stricken with Ebola Outbreak
To support healthcare professionals in West Africa battling the Ebola outbreak, Elsevier [http://www.elsevier.com/] will provide free access to its primary online clinical infomation ...and reference tool, ClinicalKey. The African countries that are part of this free r-
ClinicalKey access program include the four in West Africa currently affected –Liberia, Nigeria, Sierra Leone and Guinea –plus other African countries where the outbreak has the potential to spread, including Cameroon, Central African Republic, Ghana, Angola, Togo, United Republic of Tanzania, Ethiopia, Mozambique, Burundi, Equatorial Guinea, Madagascar and Malawi. All IPs originating from these countries will be granted free access for the next two months
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In 2012, the World Health Organisation (WHO) set out a roadmap for the control, elimination, or eradication of 17 neglected tropical diseases by 2020. Many were skeptical about the achievability of such goals. Now, still two years away from that end point, good news is emerging for gambiense human A...frican trypanosomiasis (HAT), or sleeping sickness, caused by the tsetse-fly−transmitted protozoan parasite Trypanosoma brucei gambiense in West and Central Africa. The Rhodesiense form of the disease is being pursued under a separate programme.
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More countries eliminate human African trypanosomiasis as a public health problem: Benin and Uganda (gambiense form) and Rwanda (rhodesiense form)
Human African trypanosomiasis (HAT), or sleeping sickness, transmitted by tsetse flies in sub-Saharan Africa, is a life-threatening disease that afflict...s poor rural populations. It is caused by trypanosome parasites of 2 subspecies: Trypanosoma brucei gambiense in West and Central Africa, and T. b. rhodesiense in East Africa.
HAT transmission can be reduced and interrupted by deploying and maintaining capacities for testing people at risk in order to detect and treat cases, and by controlling tsetse populations that are in contact with humans.
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Research to develop point-of-care tests is in progress. Treatment of Buruli ulcer comprises 8 weeks of combined antibiotics (rifampicin and clarithromycin). Complementary therapies such as wound care, skin graft and prevention of disability are needed in some cases to ensure full recovery.
The targ...et set by the World Health Organization (WHO) for control of Buruli ulcer is for countries to achieve a rate of case confirmation by PCR of at least 70%. All endemic countries have at least one PCR facility to support confirmation of cases. However, most countries in the WHO African Region have not been able to reach the target, and the rate of case confirmation has been declining
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Nat Commun 9, 5370 (2018). https://doi.org/10.1038/s41467-018-07804-8. Mycobacterium ulcerans is the causative agent of Buruli ulcer, a neglected tropical skin disease that is most commonly found in children from West and Central Africa. Despite the severity of the infection, therapeutic options are... limited to antibiotics with severe side effects. Here, we show that M. ulcerans is susceptible to the anti-tubercular drug Q203 and related compounds targeting the respiratory cytochrome bc1:aa3. While the cytochrome bc1:aa3 is the primary terminal oxidase in Mycobacterium tuberculosis, the presence of an alternate bd-type terminal oxidase limits the bactericidal and sterilizing potency of Q203 against this bacterium. M. ulcerans strains found in Buruli ulcer patients from Africa and Australia lost all alternate terminal electron acceptors and rely exclusively on the cytochrome bc1:aa3 to respire. As a result, Q203 is bactericidal at low dose against M. ulcerans replicating in vitro and in mice, making the drug a promising candidate for Buruli ulcer treatment.
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An Independent Report
of the West Africa Commission on Drugs
The New England Journal of Medicine has a perspective on Ebola Virus Disease in West Africa — Clinical Manifestations and Management, written by authors who have cared for more than 700 patients with EVD between August 23 and October 4, 2014, in the largest Ebola treatment unit in Monrovia, Liberi...a (Free Access) NEJm, November 5, 2014DOI: 10.1056/NEJMp1413084
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Connecting global priorities: biodiversity and human health: a state of knowledge review
Using data from two surveys and 164 countries, this research brief describes the educational strategies countries are putting into place, or plan to, in order to mitigate learning impacts of extended school closures, particularly for the most vulnerable children. In addition, it highlights emerging ...good practices.
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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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