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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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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This publication outlines public health aspects of alcohol use and harm in WHO South East Asia Region Countries. It summarizes Global Regional and country specific data and also discusses aspects of alcohol control that are important in the context of the Region. The possible future trend of alcohol... use in the Region is also analysed and current and future barriers to effective alcohol control in countries of the Region are discussed.
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WHO/CDS/CSR/EDC/99.2 Plague Manual
Epidemiology, Distribution, Surveillance and Control
The primary audience for this guidance is persons
working directly in vector-borne disease prevention
and control, including programme managers,
researchers and field workers. A brief technical
background is provided for the benefit of persons
without expertise in vector-borne diseases; readers...
working in the field may wish to skip the background
section and begin with the discussion of ethical
issues and values in Chapter 3. The guidance cannot
offer universally applicable answers to the complex
ethical issues raised, nor can it provide a checklist of
issues that are necessarily relevant in all situations.
Rather, its goal is to help readers recognize aspects
of their work that raise significant ethical challenges
and to respond to these challenges in accordance
with internationally accepted values and norms.
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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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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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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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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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PNAS | March 4, 2014 | vol. 111 | no. 9
Malaria is an important disease that has a global distribution and significant health burden. The spatial limits of its distribution and seasonal activity are sensitive to climate factors, as well as the local capacity to control the disease. Malaria is also ...one of the few health outcomes that has been modeled by more than one research group and can therefore facilitate the first model intercomparison for health impacts under a future with climate change. We used bias-corrected temperature and rainfall simulations from the Coupled Model Intercomparison Project Phase 5 climate models to compare the metrics of five statistical and dynamical malaria impact models for three future time periods (2030s, 2050s, and 2080s). We evaluated three malaria outcome metrics at global and regional levels: climate suitability, additional population at risk and additional person-months at risk across the model outputs. The malaria projections were based on five different global climate models, each run under four emission scenarios (Representative Concentration Pathways, RCPs) and a single population projection. We also investigated the modeling uncertainty associated with future projections of populations at risk for malaria owing to climate change. Our findings show an overall global net increase in climate suitability and a net increase in the population at risk, but with large uncertainties. The model outputs indicate a net increase in the annual person-months at risk when comparing from RCP2.6 to RCP8.5 from the 2050s to the 2080s. The malaria outcome metrics were highly sensitive to the choice of malaria impact model, especially over the epidemic fringes of the malaria distribution.
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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.
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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Over the past twenty years, huge efforts made by a broad coalition of stakeholders curbed the last epidemic and brought the disease to the brink of elimination. In this paper, the latest figures on disease occurrence, geographical distribution and control activities are presented. Strong evidence in...dicates that the elimination of sleeping sickness ‘as a public health problem’ by 2020 is well within reach. In particular, fewer than one thousand new cases were reported in 2018, and the area where the risk of infection is estimated as moderate, high or very high has shrunk to less than 200,000 km2. More than half of this area is in the Democratic Republic of the Congo. The interruption of transmission of the gambiense form, targeted by the World Health Organization (WHO) for 2030, will require renewed efforts to tackle a range of expected and unexpected challenges. The rhodesiense form of the disease represents a small part of the overall HAT burden. For this form, the problem of under detection is on the rise and, because of an important animal reservoir, the elimination of disease transmission is not envisioned at this stage.
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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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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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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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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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The objectives of the meeting were:
1. To step up the commitment of national authorities and technical and financial partners toWHO’s elimination objective for g-HAT.
2. To share achievements, challenges and views on the elimination goal among countries and implementing partners.
3. To assess t...he status of critical technical aspects to be solved in research and development of drugs and diagnostic tools, epidemiology, vector control and animal reservoirs.
4. To define the mechanisms for strengthening and organizing collaboration and coordination among stakeholders.
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The objectives of the meeting were:
1. To update the current status of the disease transmission, country capacities and plans for tackling the disease.
2. To understand the epidemiology including disease distribution and risk, the models
for estimating under-detection, the geographical variati...ons of in clinical presentation,
the roles of domestic and wild animal reservoirs and the subsequent different
transmission patterns and control approaches, including vector control.
3. To update current research and development efforts for improving diagnostic and
treatment tools.
4. To define the goals for achieving the control of r-HAT, the need for a multisectoral
approach and to discuss the strategy for controlling r-HAT and the coordination
mechanisms.
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