The document explains why vector control is important in national programmes and describes the preparation of a tailor-made vector control plan for national programmes. It outlines entomological procedures for regular and specific vector control and how data should be analysed for better overall und...erstanding of filarial transmission and vectors. The document will also be useful for teaching personnel in lymphatic filariasis programmes about the use and value
of entomological procedures in overall epidemiological appraisal in the context of
elimination
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This Mpox SPRP Global Monitoring & Evaluation (M&E) Framework, also referred to as the Framework, aims to monitor and report on global progress towards these objectives, including information about country-level response efforts and WHO support to Member States. Regular collection and analysis of da...ta on these objectives, alongside the ongoing tracking of the epidemiological situation, are key to informing decision-making, operational adjustments, as well as ensuring transparency and accountability for achieving the goal to stop the Mpox outbreak. This document suggests reporting indicators for monitoring of the global response to the Mpox PHEIC as articulated in the Mpox SPRP and Operational Planning Guidelines for countries.
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The indicators and questions in this document are designed for use by national AIDS programmes and partners to assess the state of a country’s HIV and AIDS response, and to measure progress towards achieving national HIV targets. Countries are encouraged to integrate these indicators and questions... into their ongoing monitoring efforts and to report comprehensive national data through the Global AIDS Monitoring (GAM) process. In this way they will contribute to improving understanding of the global response to the HIV epidemic, including progress that has been made towards achieving the commitments and global targets set out in the new United Nations Political Declaration on HIV and AIDS: Ending Inequalities and Getting on Track to End AIDS by 2030, adopted in June 2021, and the linked Sustainable Development Goals.
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Despite the significant role of vector control in national leishmaniasis control programmes, the programmatic community perceives vector control as the weakest component of leishmaniasis control strategies in terms of resources, scientific evidence of the usefulness of interventions and capacity for... quality-assured implementation. Therefore, the main objective of this manual is to provide practical tools, techniques and procedures to strengthen sand fly control and surveillance in order to improve implementation of leishmaniasis control programmes. The manual provides a rationale for programme managers in different geographical regions on the types of vector control interventions to be used in different epidemiological and environmental settings and also how to measure their impact.
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In 2005, the World Health Organization (WHO) recognized Chagas disease (CD; Trypanosoma cruzi infection) as a neglected tropical disease (NTD) [1] and included it into the global plan to combat NTDs [2]. The Target 3.3 of the United Nations Sustainable Development Goals (UN/SDG) aims at ending the e...pidemics of NTDs by 2030 [3]. Mother-to-child (congenital/connatal) transmission is currently the main mode of transmission of T. cruzi over blood transfusions and organ transplantations in vector-free areas within and outside Latin America (LA). Based on recent demonstrations that congenital transmission can be prevented [4–7], WHO has shifted its objective, in 2018, from control to elimination of congenital CD (cCD).
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Dengue is a significant public health problem. There are four dengue virus serotypes identified; however, its diagnosis is difficult due to the existence of many viruses, bacteria, and parasites producing the same clinical presentation, being present in the same geographical area and even producing ...coinfections. Therefore, determining whether a person has, had, or is infected with dengue virus is of great importance. In order to do so, direct and indirect laboratory tests have been developed to identify the virus or part of its structure that generally detects the antibody response. These techniques are used for diagnosis, epidemiological studies, monitoring, assessment and production of vaccines and antivirals, etc. They range from the use of cell cultures, animal models, inoculation by insects, and serology tests to the use of detection molecular tests and quantification of genetic material that are described in this chapter herein, a brief explanation of this methodology, its strengths and weaknesses, and its application in the dengue research.
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The introduction of vaccines for coronavirus disease 2019 (COVID-19) added another measure to the existing set of
recommended preventive measures (wearing a mask in public, keeping a distance from other people and regular handwashing). The roll-out of the vaccines, however, raised concerns that vac...cination may lead to lower adherence to the existing
preventive measures. The advice from the World Health Organization (WHO) was to continue these public health and
social measures after being vaccinated.1 However, evidence from other epidemics suggests that there is lower adherence to
preventive measures when some level of protection exists (for example, individuals who use human immunodeficiency virus
pre-exposure prophylaxis
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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 review focusses on the interactions between the etiologic agent of Chagas disease, Trypanosoma cruzi, and its triatomine vector. The flagellate mainly colonizes the intestinal tract of the insect. The effect of triatomines on trypanosomes is indicated by susceptibility and refractoriness phenom...ena that vary according to the combination of the strains. Other effects are apparent in the different regions of the gut. In the stomach, the majority of ingested blood trypomastigotes are killed while the remaining transform to round stages. In the small intestine, these develop into epimastigotes, the main replicative stage. In the rectum, the population density is the highest and is where the infectious stage develops, the metacyclic trypomastigote. In all regions of the gut, starvation and feeding of the triatomine affect T. cruzi. In the small intestine and rectum, starvation reduces the population density and more spheromastigotes develop. In the rectum, feeding after short-term starvation induces metacyclogenesis and after long-term starvation the development of specific cells, containing several nuclei, kinetoplasts and flagella. When considering the effects of T. cruzi on triatomines, the flagellate seems to be of low pathogenicity. However, during stressful periods, which are normal in natural populations, effects occur often on the behaviour, eg, in readiness to approach the host, the period of time before defecation, dispersal and aggregation. In nymphs, the duration of the different instars and the mortality rates increase, but this seems to be induced by repeated infections or blood quality by the feeding on infected hosts. Starvation resistance is often reduced by infection. Longevity and reproduction of adults is reduced, but only after infection with some strains of T. cruzi. Only components of the surface coat of blood trypomastigotes induce an immune reaction. However, this seems to act against gut bacteria and favours the development of T. cruzi.
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Course information
Yaws is targeted for eradication by WHO in the 2021-2030 NTD Roadmap. It is therefore crucial to know how to identify cases, design and implement activities to eradicate the disease at the community level.
In the context of integration of skin NTDs it is vital to learn to recogn...ize a disease targeted for eradication. At the individual level yaws lesions may mimic other skin diseases. At the community level, it is key to know how to design and implement the total community treatment strategy and monitor its impact. This course aims at providing health workers with the basic knowledge to understand the epidemiology, diagnosis, treatment, impact, eradication strategy and reporting of yaws.
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Course information
Yaws is targeted for eradication by WHO in the 2021-2030 NTD Roadmap. It is therefore crucial to know how to identify cases, design and implement activities to eradicate the disease at the community level.
In the context of integration of skin NTDs it is vital to learn to recogn...ize a disease targeted for eradication. At the individual level yaws lesions may mimic other skin diseases. At the community level, it is key to know how to design and implement the total community treatment strategy and monitor its impact. This course aims at providing health workers with the basic knowledge to understand the epidemiology, diagnosis, treatment, impact, eradication strategy and reporting of yaws.
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Leishmaniasis is a parasitic disease caused by the Leishmania parasite. This parasite typically lives in infected sand flies. You can contract leishmaniasis from a bite of an infected sand fly.
The sand flies that carry the parasite typically reside in tropical and subtropical environments. Fatal... epidemics have occurred in areas of Asia, East Africa, and South America.
Affected regions are often remote and unstable, with limited resources for treating this disease. Doctors Without Borders calls leishmaniasis one of the most dangerous neglected tropical diseases. The organization also states this disease is second only to malaria in parasitic causes of death.
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Leishmaniasis is a vector-borne disease with a wide variety of parasite species, reservoirs, and vectors involved in transmission. It is caused by different species of the protozoa Leishmania and is transmitted to animals and humans through a bite of insects in the Psychodidae family. Its presence i...s directly linked to poverty, but social, environmental, and climatalogic factors directly influence the disease's epidemiology.
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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 new WHO recommendations for rabies immunization supersede the 2010 WHO position
on pre-exposure prophylaxis (PrEP) and post-exposure prophylaxis (PEP) for rabies. These updated
recommendations are based on new evidence and directed by public health needs that are cost-,
dose- and time-sparing..., while assuring safety and clinical effectiveness. In addition, new guidance on
prudent use of rabies immunoglobulins (RIG) is provided.
The following sections summarize the main points of the updated WHO position as endorsed by the
Strategic Advisory Group of Experts on immunization (SAGE) at its meeting in October 20171. The full
version of the WHO position on rabies vaccines and immunoglobulins will be published in the Weekly
Epidemiological Record2 in April 2018.
Rabies prevention involves two main strategies: (i) dog vaccination to interrupt virus transmission to
humans; and (ii) human vaccination as a series of vaccine administrations before or after an exposure.
Currently, rabies vaccines made from inactivated cell cultures are extremely well tolerated and have no
contraindications.
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The objective of this concept note and the framework it outlines is the elimination of a group of CDs and the negative health effects they generate, which together create a tangible burden on affected individuals, their families and communities, and on health care systems throughout the Region. Thou...gh there is no unified consensus on the best measures to use for the public’s health and a nation’s epidemiologic situation, it is common for the disease burden to be measured by disease rates (incidence, prevalence, etc.), disease-specific death rates, comparative morbidity and mortality rates, geographic distribution, and disability-adjusted life years (DALYs). The current epidemiological situation, including data on disease rates or geographic distribution for the diseases in Table 1, is discussed below in Section 4. Hotez et al. (2008) were the first to review and compare the burden of DALYs in Latin America and the Caribbean—for NTDs, HIV/AIDS, malaria, and TB—as it existed about 10 years ago. Though the regional burden of TB, malaria, and neglected infectious diseases (NIDs) is somewhat less than it was 10 years ago, work (and schooling) continue to be lost to illness and premature death or disability, and the need for stepping up disease elimination efforts is evident in all communities living in vulnerable conditions....
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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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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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Chagas disease (American trypanosomiasis) is endemic in 21 countries of the Americas, where control is largely focused on elimination of the domestic insect vectors (Triatominae) coupled with measures to extend and improve the screening of blood donors in order to avoid tranfusional transmission. Th...rough national programmes and multinational initiatives coordinated by WHO-PAHO, much has been accomplished in these domains in terms of reducing transmission. Attention now turns to consolidating the successes in interrupting transmission, and improved treatment for those already infected and those who may become affected in the future. This article, based on technical discussions at the "Epidemiological and Sociological Determinants of Chagas Disease, Basic Information to Establish a Surveillance and Control Policy " meeting in Rio de Janeiro, is designed to open the debate on appropriate strategies for continuation of the successful initiatives against Chagas disease.
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Leishmaniasis is a vector-borne disease with a wide variety of parasite species, reservoirs, and vectors involved in transmission. It is caused by different species of the protozoa Leishmania and is transmitted to animals and humans through a bite of insects in the Psychodidae family. Its presence i...s directly linked to poverty, but social, environmental, and climatalogic factors directly influence the disease's epidemiology.
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