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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Since 2000, concerted efforts by national programmes, supported by public–private partnerships, nongovernmental organizations, donors and academia under the auspices and coordination of the World Health Organization (WHO), have produced important achievements in the control of human African trypan...osomiasis (HAT). As a consequence, the disease was targeted for elimination as a public health problem by 2020. The Sixty-sixth World Health Assembly endorsed this goal in resolution WHA66.12 on neglected tropical diseases, adopted in 2013.
National sleeping sickness control programmes (NSSCPs) are core to progressing control of the disease and in adapting to the different epidemiological situations. The involvement of different partners, as well as the support and trust of long-term donors, has been crucial for the achievements.
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This version of Field Trials of Health Interventions includes seven new chapters on conducting systematic literature reviews, trial
governance, preliminary studies and pilot testing, budgeting and accounting, intervention costing and economic analysis, and Phase IV studies. Before new interventions... are released into disease control programmes, it is essential that they are carefully evaluated in ‘field trials’. These may be complex and expensive undertakings, requiring the follow-up of hundreds, or thousands, of individuals, often for long periods. This manual was designed to provide guidance on the practical issues in great detail
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The road map sets global targets and milestones to prevent, control, eliminate or eradicate 20 diseases and disease groups as well as cross-cutting targets aligned with the Sustainable Development Goals. Three foundational pillars will support global efforts to achieve the targets: accelerate progra...mmatic action (pillar 1), intensify cross-cutting approaches (pillar 2) and change operating models and culture to facilitate country ownership (pillar 3).
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Water, sanitation and hygiene (WASH) are critical in the prevention and care for all of the 17 neglected tropical diseases (NTDs) scheduled for intensified control or elimination by 2020.
Provision of safe water, sanitation and hygiene is one of the five key interventions within the global NTD ...roadmap. Yet to date, the WASH component of the strategy has received little attention and the potential to link efforts on WASH and NTDs has been largely untapped.
Focused efforts on WASH are urgently needed if the global NTD roadmap targets are to be met. This is especially needed for NTDs where transmission is most closely linked to poor WASH conditions such as soil-transmitted helminthiasis, schistosomiasis, trachoma and lymphatic filariasis.
This strategy aims to mobilise WASH and NTD actors to work together towards the roadmap targets.
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Un comité OMS d’experts sur la trypanosomiase humaine africaine (THA) : lutte et surveillance, s’est réuni à Genève (Suisse), du 22 au 26 avril 2013. Le Dr H. Nakatani, sous-directeur général pour le VIH/SIDA, la tuberculose, le paludisme et les maladies tropicales négligées, a ouvert la... réunion au nom du Dr M. Chan, directeur-général de l’OMS.
La THA est une maladie qui afflige les populations rurales de l’Afrique, là où prolifère la mouche tsé-tsé (ou glossine), vecteur des trypanosomes qui en sont la cause. On distingue deux formes de THA : la forme à T. b. gambiense ou forme gambienne, endémique en Afrique de l’Ouest et en Afrique centrale et qui
représente actuellement 95 % des cas, et la forme à T. b. rhodesiense ou forme rhodésienne, endémique en Afrique de l’Est et en Afrique australe, à laquelle sont dus les 5 % restants.
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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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Health communication has proven to play a crucial role in addressing diseases such as dengue, Zika and chikungunya, for which there are no definitive or easily accessible vaccines. In this context, this discipline becomes a fundamental tool to promote the change behavior and promote preventive pract...ices that reduce the transmission of these diseases. By not having a definitive medical solution, accurate and timely information, effectively disseminated through educational campaigns, media and communication channels public health, can significantly influence individual and community actions to control the spread of these mosquito-borne viruses. The accumulated research around the threat of the aforementioned arboviral diseases brings together a series of recommendations around specific communication activities, such as disseminating timely and accurate information that integrates public health concerns and the needs of information of the population, especially vulnerable groups such as women of childbearing age, pregnant women and health workers.
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Advising principles. The purpose of this document is to support competent authorities in charge of IHR implementation to improve national capacities for the prevention, detection and control of events, by strengthening communications and coordination between points of entry and the national health s...urveillance system
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Version corregida. En la actualidad, las guías basadas en la evidencia constituyen una de las herramientas más útiles para mejorar la salud pública y la práctica clínica. Su finalidad es formular intervenciones con sólidas pruebas de eficacia, evitar riesgos innecesarios, utilizar los recurso...s de forma eficiente, disminuir la variabilidad clínica y, en esencia, mejorar la salud y garantizar una atención de calidad, razón de ser de los sistemas y servicios de salud.
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Esta publicación presenta la Agenda para las Américas sobre salud, medioambiente y cambio climático 2021-2030. Esta agenda es un llamamiento al sector de la salud para que lidere la labor a fin de abordar los determinantes ambientales de la salud en la Región de las Américas. La Organización P...anamericana de la Salud (OPS) colaborará con sus Estados Miembros para alcanzar el propósito y el objetivo de esta agenda de promover el bienestar de todos a todas las edades, utilizando un enfoque sostenible y equitativo en el que se otorgue prioridad a la reducción de las inequidades en la salud. La agenda se ha elaborado bajo la égida de la Estrategia mundial de la OMS sobre salud, medio ambiente y cambio climático, y se basa en los compromisos establecidos en la Agenda de Salud Sostenible para las Américas 2018-2030 y el Plan Estratégico de la OPS 2020-2025. La agenda se elaboró en consulta con el grupo técnico asesor y mediante un proceso de toma de decisiones basado en el consenso con los Estados Miembros durante el período 2019-2020. Con la finalidad de alcanzar el Objetivo de Desarrollo Sostenible 3, la agenda se centra en: mejorar el desempeño de los programas e instituciones de salud pública ambiental; fomentar sistemas de salud sostenibles y resilientes desde el punto de vista medioambiental; y promover ciudades y comunidades saludables y resilientes desde el punto de vista medioambiental. Su aplicación será específica para cada contexto y se basará en las necesidades y realidades de los diversos países. Beneficiará a los países y territorios al promover prácticas de buena gobernanza, fortalecer el liderazgo y la coordinación en el sector de la salud, fomentar la acción intersectorial, centrarse en la prevención primaria, y mejorar la evidencia disponible y la comunicación. Facilitará el acceso a los recursos humanos, técnicos y financieros necesarios para abordar los determinantes ambientales de la salud y garantizará que la Región se involucre plenamente en los procesos y acuerdos mundiales sobre salud, medioambiente y cambio climático.
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Esta publicação apresenta a Agenda para as Américas sobre Saúde, Meio Ambiente e Mudança Climática 2021–2030 (a Agenda). Esta Agenda é um apelo ao setor da saúde para que se posicione na vanguarda da abordagem aos determinantes ambientais da saúde nas Américas. A Organização Pan-Americ...ana da Saúde (OPAS) trabalhará com os Estados Membros para alcançar a meta e objetivo desta agenda: assegurar uma vida saudável e promover o bem-estar para todos, em todas as idades, usando um enfoque sustentável e equitativo que priorize a redução das iniquidades em saúde. A Agenda foi desenvolvido sob a égide da Estratégia Mundial da Organização Mundial da Saúde (OMS) sobre a Saúde, o Meio Ambiente e a Mudança Climática e se baseia nos compromissos estabelecidos na Agenda de Saúde Sustentável para as Américas 2018–2030 e no Plano Estratégico da OPAS 2020–2025. A Agenda foi desenvolvida em consulta com o Grupo Técnico Assessor (GTA), por meio de um processo decisório consensual com os Estados Membros, durante os anos de 2019 e 2020. Para alcançar o Objetivo de Desenvolvimento Sustentável 3, a Agenda enfoca: melhoria do desempenho dos programas e instituições de saúde pública ambiental; promoção de sistemas de saúde ambientalmente resilientes e sustentáveis; e promoção de cidades e comunidades ambientalmente saudáveis e resilientes. A implementação da Agenda deverá ser contextual, com base nas necessidades e realidades de cada país. Ela beneficiará países e territórios ao promover boas práticas de governança; fortalecer as funções de liderança e coordenação do setor da saúde; favorecer ações intersetoriais; focar na prevenção primária; e melhorar as evidências e a comunicação. Facilitará o acesso aos recursos humanos, técnicos e financeiros necessários para abordar os determinantes ambientais da saúde e garantir que a Região esteja totalmente engajada nos processos e acordos globais de saúde, meio ambiente e mudança climática. O objetivo desta Agenda é fortalecer a capacidade dos atores da saúde, tanto no setor da saúde quanto em outros setores, para abordarem e se adaptarem aos determinantes ambientais da saúde (DAS), priorizando as populações que vivem em condições de vulnerabilidade, a fim de atingir o Resultado Intermediário 18 do Plano Estratégico da OPAS 2020–2025, diretamente, e vários outros resultados do Plano, indiretamente. Para enfrentar e se adaptar aos desafios dos DEA na Região, será necessária uma abordagem integrada e baseada em evidências dentro do setor da saúde e entre os setores, possibilitada e favorecida por boas práticas de governança, mecanismos de gestão adequados, vontade política de alto nível e dotação adequada de recursos humanos, técnicos, tecnológicos e financeiros.
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PLoS Neglected Tropical Diseases https://doi.org/10.1371/journal.pntd.0004762
This study shows the importance of an integrated entomological and medical surveillance for the evaluation of arboviral disease risk, which is a precondition for designing cost-effective vector control programs.
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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WHO/CDS/CSR/EDC/99.2 Plague Manual
Epidemiology, Distribution, Surveillance and Control
Acta Trop. 2020 Mar:203:105289. doi: 10.1016/j.actatropica.2019.105289
The role of malacological surveys to identify potential transmission sites for schistosomiasis control in this era of
mass drug administration have received little attention. In that context, the present study was conducted to
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determine the abundance, identity and disease transmission potential of intermediate host snails for intestinal
schistosomiasis on Ijinga Island, north-western Tanzania.
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Environment International Volume 86, January 2016, Pages 14-23
Climate change refers to long-term shifts in weather conditions and patterns of extreme weather events. It may lead to changes in health threat to human beings, multiplying existing health problems. This review examines the scientific e...vidences on the impact of climate change on human infectious diseases. It identifies research progress and gaps on how human society may respond to, adapt to, and prepare for the related changes. Based on a survey of related publications between 1990 and 2015, the terms used for literature selection reflect three aspects — the components of infectious diseases, climate variables, and selected infectious diseases. Humans' vulnerability to the potential health impacts by climate change is evident in literature. As an active agent, human beings may control the related health effects that may be effectively controlled through adopting proactive measures, including better understanding of the climate change patterns and of the compound disease-specific health effects, and effective allocation of technologies and resources to promote healthy lifestyles and public awareness. The following adaptation measures are recommended: 1) to go beyond empirical observations of the association between climate change and infectious diseases and develop more scientific explanations, 2) to improve the prediction of spatial–temporal process of climate change and the associated shifts in infectious diseases at various spatial and temporal scales, and 3) to establish locally effective early warning systems for the health effects of predicated climate change.
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The Journal of Infectious Diseases, jiy435, https://doi.org/10.1093/infdis/jiy435.
Many outbreaks reported high proportions of infected HWs. Similar HW infection rates and exposure risk factors in both past and recent EVD and MVD outbreaks emphasize the need to improve the implementation of approp...riate infection control measures consistently across all healthcare settings.
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PLoS Negl TropDis14(10): e0008837. https://doi.org/ 10.1371/journal.pntd.0008837.
We conducted alandscape analysis on parasitic and vector-borne disease elimination approaches with the aim toidentify evidence-based strategies, core components and key concepts for achieving and sustaining schistosom...iasis control and for progressing elimination efforts towards interruption oftransmission insubSaharan Africa.
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Zika and dengue viruses remain significant public health threats. These viruses share the same Aedes (Stegomyia) mosquito vectors and geographic distributions but infections cannot be readily distinguished clinically and need to be differentiated from each other, and from other circulating arboviral... and non-arboviral pathogens, using laboratory tests. This document provides guidance on current testing strategies for Zika and dengue virus infections with updates to the previous interim guidance for laboratory testing for ZIKV, addressing pregnant and non-pregnant patients respectively, and incorporates current guidance for dengue virus diagnostic testing. The choice of laboratory assays and interpretation of test results require careful consideration of epidemiology, patient history, and limitations of existing diagnostic tests.
This interim guidance is for use by staff of laboratories testing for Zika and dengue virus infections and for clinical practitioners and public health professionals providing clinical management or surveillance.
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