Human schistosomiasis otherwise called bilharzia, is a fresh- water snail transmitted intravascular debilitating disease resulting from infection by the parasitic dimorphic Schistosoma trematode worms, which lives in the bloodstream of humans. The World Health Organization (WHO) regards the disease ...as a neglected tropical disease, with an estimated 732 million persons being vulnerable to infection worldwide in renowned transmission areas. Steinmann and co-workers documented that over 200 million individuals from Africa, Asia, and South America are infected with this disease. The WHO further estimated that schistosome infections and geohelminths accounts for over 40% of the world tropical disease burden with the exclusion of malaria. Humans get infected with this disease when they make contact with water contaminated with the skin-penetrating cercariae. Prevalence of schistosomiasis, at present, is still high in sub-Saharan Africa. In 2008, 17.5 million people were treated globally for schistosomiasis, 11.7 million of those from sub-Saharan Africa only. Approximately 120 million individuals in sub-Saharan Africa have schistosomiasis-related symptoms while about 20 million undergo hardship as a result of chronic presentations of the disease.
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Research and Reports in Tropical Medicine 2022:13 25–40
Chagas disease (CD) or American trypanosomiasis is a neglected parasitic disease associated with significant mortality and morbidity that includes long-term disability, social stigma and a mental health toll. Perceived as a disease of the ve...ry poor, this infection, once limited to rural areas of Latin America (LA), has now spread via migration to non-endemic areas and countries, where transmission is maintained via non-vectorial routes.
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Communicable diseases are a major cause of suffering, disability and death in the world. The World Health
Organization’s Programme on Communicable Diseases provides technical guidance and support to national governments to organize and implement programmes aimed at setting up or strengthening ong...oing control of common diseases, reducing transmission, mortality, morbidity and human suffering, and gradually eliminating these diseases so that they cease to be a public health problem. In some cases, the aim may also be to eradicate selected communicable diseases
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La formation initiale en soins inrmiers vise le développement des compétences inhérentes à la
pratique inrmière. Qu’elle relève des domaines scientique, relationnel, éthique, déontologique
ou juridique, l’acquisition des savoirs occupe une place prépondérante dans les appren...tissages que
l’étudiante doit faire pour exercer sa future profession. À cela s’ajoute l’habileté à organiser ses
activités cliniques, la capacité de s’impliquer au sein d’une équipe travaillant en interdisciplinarité
et la facilité à utiliser les divers moyens de transmission de l’information clinique (plan de soins et
de traitements inrmiers, plan thérapeutique inrmier, rédaction des notes d’évolution dans le
dossier et autres outils de documentation).
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Carlos Chagas discovered American trypanosomiasis, also named Chagas disease (CD) in his honor, just over a century ago. He described the clinical aspects of the disease, characterized by its etiological agent (Trypanosoma cruzi) and identified its insect vector. Initially, CD occurred only in Latin... America and was considered a silent and poorly visible disease. More recently, CD became a neglected worldwide disease with a high morbimortality rate and substantial social impact, emerging as a significant public health threat. In this context, it is crucial to better understand better the epidemiological scenarios of CD and its transmission dynamics, involving people infected and at risk of infection, diversity of the parasite, vector species, and T. cruzi reservoirs. Although efforts have been made by endemic and non-endemic countries to control, treat, and interrupt disease transmission, the cure or complete eradication of CD are still topics of great concern and require global attention. Considering the current scenario of CD, also affecting non-endemic places such as Canada, USA, Europe, Australia, and Japan, in this review we aim to describe the spread of CD cases worldwide since its discovery until it has become a global public health concern.
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In South and Central America, lymphatic filariasis (LF) is caused by Wuchereria bancrofti, which is transmitted by Culex quinquefasciatus, the only vector species in this region. Of the seven countries considered endemic for LF in the Americas in the last decade, Costa Rica, Suriname and Trinidad a...nd Tobago were removed from the World Health Organization list in 2011. The remaining countries, Brazil, Dominican Republic, Guyana and Haiti, have achieved important progress in recent years. Brazil was the first country in the Americas to stop mass drug administration (MDA) and to establish post-MDA surveillance. Dominican Republic stopped MDA in all LF-endemic foci: La Ciénaga and Southwest passed the third Transmission Assessment Survey (TAS) and the Eastern focus passed TAS-1 in 2018. Haiti passed the TAS and interrupted transmission in >80% of endemic communes, achieving effective drug coverage. Guyana implemented effective coverage in MDAs in 2017 and 2018 and in 2019 scaled up the treatment for 100% of the geographical region, introducing ivermectin in the MDA in order to achieve LF elimination by the year 2026. The Americas region is on its way to eliminating LF transmission. However, efforts should be made to improve morbidity management to prevent disability of the already affected populations.
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In 1997, the Fiftieth World Health Assembly adopted resolution WHA50.29 on the elimination of
lymphatic filariasis as a public health problem. Preliminary guidance from WHO printed in 2011 referred to “verification” as the official process by which the achievements of the Global Programme to El...iminate Lymphatic Filariasis (GPELF) would be confirmed. For the sake of harmonization, the terminology now used for elimination of lymphatic filariasis as a public health problem is “validation”. In 2015, the WHO Strategic and Technical Advisory Group for Neglected Tropical Diseases endorsed standardized processes for confirming and acknowledging success for all neglected tropical diseases targeted for eradication, elimination of transmission, or elimination as a public health problem.
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Principaux faits
L’ulcère de Buruli est une infection chronique débilitante causée par la bactérie Mycobacterium ulcerans.
L’ulcère de Buruli a été signalé dans au moins 33 pays situés dans des régions au climat tropical, subtropical ou tempéré d’Afrique, d’Amérique ...du Sud et du Pacifique occidental.
Cette infection affecte la peau et parfois les os et peut entraîner des déformations et des incapacités permanentes.
Le mode de transmission de cette maladie est inconnu, on ne peut la prévenir.
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Key facts
Buruli ulcer is a chronic debilitating disease caused by an environmental Mycobacterium ulcerans.
At least 33 countries with tropical, subtropical and temperate climates have reported Buruli ulcer in Africa, South America and Western Pacific regions.
It often affects the skin an...d sometimes bone and can lead to permanent disfigurement and long-term disability.
The mode of transmission is not known and there is no prevention for the disease.
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L’ulcère de Buruli, une infection causée par Mycobacterium ulcerans, touche plus de 33 pays dans le monde, mais un peu moins de la moitié seulement de ces pays communiquent régulièrement des données sur la maladie à l’OMS. La plupart des cas notifiés se trouvent dans les sous-régions d...Afrique occi-
dentale et centrale. Le mode de transmission de l’ulcère de Buruli n’est pas connu. Environ la moitié des personnes touchées sont des enfants de moins de 15 ans et les deux sexes sont concernés à parts égales.
Le diagnostic repose principalement sur l’observation des caractéristiques cliniques et épidémiologiques.
Parmi les quatre méthodes de confirmation utilisées (examen microscopique, amplification en chaîne par polymérase (PCR), histopathologie et mise en culture), la PCR est la plus rapide et la plus courament employée. D’autres méthodes rapides, comme l’utilisation de la chromatographie sur couche mince par fluorescence pour détecter la mycolactone dans les lésions des cas suspects d’ulcère de Buruli, sont actuellement à l’étude dans quatre pays d’Afrique. Des travaux de recherche sont en cours pour mettre au
point des tests utilisables sur le lieu des soins. Le traitement de l’ulcère de Buruli consiste à administrer une association d’antibiotiques (rifampicine et clarithromycine) pendant 8 semaines. Des traitements complémentaires, comme le soin des plaies, les greffes cutanées et la prévention des incapacités, sont nécessaires dans certains cas pour parvenir à une guérison complète.
La cible fixée par l’Organisation mondiale de la Santé (OMS) exigée des pays pour assurer la lutte contre l’ulcère de Buruli est la confirmation d’au moins 70 % des cas par PCR pour chaque pays. Tous les pays d’endémie disposent d’au moins un établissement doté des moyens nécessaires pour effectuer les tests de PCR pour la confirmation des cas. Cependant, la plupart des pays de la Région africaine n’ont pas réussi à atteindre la cible fixée. Un déclin du taux de confirmation a même été observé.
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Buruli ulcer is caused by infection with Mycobacterium ulcerans. The disease is reported in more than 33 countries worldwide, but only about half of these countries regularly report data to WHO; most cases are reported from subregions of West and Central Africa. The mode of transmission is not known....
About half of those affected are children aged under 15 years; there is no gender difference. Diagnosis is based mainly on clinical and epidemiological characteristics. Of the four methods used for laboratory confirmation (microscopy, polymerase chain reaction (PCR), histopathology and culture), PCR is the most rapid and widely used. Other rapid methods for detection of mycolactone in lesions from suspected cases, such as fluorescent thin-layer chromatography, are under evaluation in four countries in Africa.
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 target 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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The Lancet October 25, 2022DOI:https://doi.org/10.1016/S0140-6736(22)01540-9
As climate change’s impacts continue to accrue, countries are persistently making wrong choices that are harming human health.
A desperate global thirst for fossil fuels is worsening climate change, leading to more extr...eme weather events that have hit every continent, led to thousands of deaths, and caused $250+ billion in damage in 2021.
• People 65+ and children <1 experienced 3.7 billion more heatwave days in 2021 than the annual average from 1986–2005.
• Heat-related deaths shot up 68% from 2000–2004 to 2017–2021.
• Climate change is abetting infectious disease transmission, warming coastal waters and leading to the spread of Vibrio bacteria like the one that causes cholera, and expanding the reach of the malaria parasite.
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the current surge in cases follows unprecedented flooding that began in mid-June 2022. With the current flood crisis affecting the national health system capacity and the growing humanitarian situation, there is a high risk of serious health impacts from dengue fever and other concurrent disease out...breaks. High population movement between Pakistan and bordering countries (in particular, Afghanistan and the Islamic Republic of Iran) means that the international transmission of dengue fever cannot be ruled out.
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Cholera is an acute diarrhoeal infection caused by ingestion of contaminated water or food. This course provides a general introduction to cholera and is intended for personnel responding to outbreaks in complex emergencies or in settings where the basic environmental infrastructures have been damag...ed or destroyed. It includes materials that can be accessed in English, Arabic and Hausa.
Free Online Course. Learning objectives: By the end of this course, participants should be able to: describe the case definition and alerts for cholera; describe main transmission routes; list list the key preventive actions; and explain how cholera control is multisectoral.
Course duration: Approximately 1 hour.
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Le choléra est une infection diarrhéique aiguë causée par l'ingestion d'eau ou d'aliments contaminés. Ce cours offre une introduction générale au choléra et s'adresse au personnel qui intervient en cas d'apparition de la maladie dans des situations d'urgence complexes ou dans des environneme...nts où les infrastructures environnementales de base ont été endommagées ou détruites. Ce cours comprend des documents accessibles en anglais et en arabe. Nous espérons que ce cours vous aidera à vous rappeler de ce que vous savez déjà et à exécuter les bons principes de gestion du choléra.
Objectif d'apprentissage : A la fin de ce cours, les participants devront être en mesure de :
décrire la définition du cas et les alertes pour le choléra ;
décrire les principales voies de transmission ;
identifier les principales actions préventives ; et
expliquer comment le contrôle du choléra est multisectoriel.
Durée du cours : Environ 1 heure.
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n response to the outbreak, the Africa Centres for Disease Control and Prevention (Africa CDC) has been supporting African Union Member States in responding to the COVID-19 pandemic through a variety of interventions such as non-pharmaceutical interventions, quarantine, testing, isolation, contact t...racing, and clinical management. The Test to Treat guideline aims to increase continental testing efforts and reduce COVID-19 transmission in Africa and put-up response measures to control the impact of the virus, both to limit spread and to reduce substantially the risks of severe health outcomes related to COVID-19 infection. These countermeasures include highly effective vaccines and boosters, rapid testing options for monitoring exposure, and effective therapeutic options for both pre-exposure prevention and treatment of mild-to-moderate disease, oxygen therapy for moderate-severe disease, all of which can potentially be updated efficiently as new variants emerge that may affect the effectiveness of the available tools.
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