Report of the third conference organized with ICONZ, DFID-RIU, Gates Foundation,
SOS, EU, TDR and FAO with the participation of ILRI and OIE
WHO headquarters, Geneva, Switzerland
23–24 November 2010
In this report we have tried to present the various issues, problems and
challenges that ...were discussed against the backdrop of the many inspiring
control programmes that were presented. Again and again these programmes
demonstrated how the NZDs are not so much re-emerging as rediscovered
– once a concerted effort is made to fi nd and treat patients – and how both
control and prevention rely on involving and inspiring the animal keeping
communities where they prevail.
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TDR (Tropical Disease Research) Annual Report 2018
This report outlines the coordination and partnership between two key ministries
(Education and Public Health) in Kenya, other line ministries, the private sector, NGOs
and the community in implementing the first phase of a sub-national school-based deworming exercise. The areas targeted included ...Coast, Central, Western, Nyanza
and parts of Eastern provinces, covering over 45 districts in this first phase. The SBD
programme is guided by the National School Health Policy and Guidelines launched in
2009.
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In their 2015 declaration "Transforming our world: the 2030 Agenda for Sustainable Development", Member States pledged to end the epidemics of AIDS, tuberculosis, malaria and neglected tropical diseases by 2030, and to combat hepatitis and other communicable diseases. This report reviews progress an...d challenges in the global response to reduce the burden of these diseases in the context of the Millennium Development Goals, and looks ahead to identify the strategies and approaches that will be needed to accelerate progress during the new development era. The report was developed by WHO's Cluster for HIV/AIDS, TB, Malaria and Neglected Tropical Diseases in 2015.
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Population movements have turned Chagas disease (CD) into a global public health problem. Despite the successful implementation of subregional initiatives to control vectorial and transfusional Trypanosoma cruzi transmission in Latin American settings where the disease is endemic, congenital CD (cCD...) remains a significant challenge. In countries where the disease is not endemic, vertical transmission plays a key role in CD expansion and is the main focus of its control. Although several health organizations provide general protocols for cCD control, its management in each geopolitical region depends on local authorities, which has resulted in a multitude of approaches. The aims of this review are to (i) describe the current global situation in CD management, with emphasis on congenital infection, and (ii) summarize the spectrum of available strategies, both official and unofficial, for cCD prevention and control in countries of endemicity and nonendemicity. From an economic point of view, the early detection and treatment of cCD are cost-effective. However, in countries where the disease is not endemic, national health policies for cCD control are nonexistent, and official regional protocols are scarce and restricted to Europe. Countries of endemicity have more protocols in place, but the implementation of diagnostic methods is hampered by economic constraints. Moreover, most protocols in both countries where the disease is endemic and those where it is not endemic have yet to incorporate recently developed technologies. The wide methodological diversity in cCD diagnostic algorithms reflects the lack of a consensus. This review may represent a first step toward the development of a common strategy, which will require the collaboration of health organizations, governments, and experts in the field.
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The report brings a new dimension to long-term thinking about the future approach to these diseases. For the fi rst time, it sets out financing needs, options, and targets for meeting WHO Roadmap goals by 2020, but also for reaching universal coverage of all people in need by 2030. Th e report makes... one investment case for cost-eff ectiveness and a second investment case where equity is the focus. It sets targets for ending catastrophic health expenditures and, as part of the drive to strengthen health systems, for getting services closer to where people live.
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Although the practice of communication is often called upon when intervening asn involgvingcommunties affected by NTD's, the disciplinary framewokr of healt communication research has been largely absent from NTD strategies. To illustrate how practices conceptualized and developed within the communi...cation field habe been applied in the context of NTD elimination, we conducted a scoping review focusing on two diseases currently targeted for elimination by the WHO: lymphatic filariasis and Chagas disease
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Neglected tropical diseases tend to cluster in the same poor populations, and to make progress with their control, they will have to be dealt with in an integrated manner. Peptide microarrays may be a solution to tese problems, where diagnosis for co-infection can be detected simultaneously using th...e one tool.
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Mapping is a prerequisite for effective implementation of interventions against neglected tropical diseases (NTDs). Before the accelerated World Health Organization (WHO)/Regional Office for Africa (AFRO) NTD Mapping Project was initiated in 2014, mapping efforts in many countries were frequently ca...rried out in an ad hoc and nonstandardized fashion. In 2013, there were at least 2,200 different districts (of the 4,851 districts in the WHO African region) that still required mapping, and in many of these districts, more than one disease needed to be mapped. During its 3-year duration from January 2014 through the end of 2016, the project carried out mapping surveysfor one ormore NTDs in at least 2,500 districts in 37 African countries. At the end of 2016, most (90%) of the 4,851 districts had completed the WHO-required mapping surveys for the five targeted Preventive Chemotherapy (PC)-NTDs, and the impact of this accelerated WHO/AFRO NTD Mapping Project proved to be much greater than just the detailed mapping results themselves. Indeed, the AFRO Mapping
Project dramatically energized and empowered national NTD programs, attracted donor support for expanding these programs, and developed both a robust NTD mapping database and data portal. By clarifying the prevalence and burden
of NTDs, the project provided not only the metrics and technical framework for guiding and tracking program implementation and success but also the research opportunities for developing improved diagnostic and epidemiologic sampling tools for all 5 PC-NTDs—lymphatic filariasis, onchocerciasis, schistosomiasis, soil-transmitted helminthiasis, and trachoma.
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Leishmaniasis is an important worldwide disease with a
zoonotic potential that presenting visceral and cutaneous
clinical forms. The domestic dog is seen as the main reservoir of Leishmania spp. and for this reason, it is the target of
the control program in some countries. The health professiona...ls’ knowledge about prevention and control of leishmaniasis was investigated. Through interviews with health
professionals from endemic regions, it was observed that
there are several conceptuais gaps about leishmaniasis.
Therefore, it is essential to put into practice the concepts
of single health, bringing human, animal and environmental
health, next to population.
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Objective
To estimate the prevalence of Chagas disease in pregnant women and the vertical transmission of the disease.
Methods
Observational studies were identified from eight electronic databases, and details on study design, population and prevalence of Chagas disease were extracted. The data... were pooled using a random-effects model, and choropleth maps were created based on geopolitical regions and countries.
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Chagas disease (CD) is caused by the parasite Trypanosoma cruzi, and it is endemic in Central, South America, Mexico and the
South of the United States. It is an important cause of early mortality and morbidity, and it is associated with poverty and stigma. A third of
the cases evolve into chronic... cardiomyopathy and gastrointestinal disease. The infection is transmitted vertically and by blood/organ
donation and can reactivate with immunosuppression. Case identification requires awareness and screening programmes targeting the
population at risk (women in reproductive age, donors, immunocompromised patients). Treatment with benznidazole or nifurtimox is most
effective in the acute phase and prevents progression to chronic phase when given to children. Treating women antenatally reduces but does
not eliminate vertical transmission. Treatment is poorly tolerated, contraindicated during pregnancy, and has little effect modifying the
disease in the chronic phase. Screening is easily performed with serology. Migration has brought the disease outside of the endemic
countries, where the transmission continues vertically and via blood and tissue/organ donations. There are more than 32 million migrants
from Latin America living in non-endemic countries. However, the infection is massively underdiagnosed in this setting due to the lack of
awareness by patients, health authorities and professionals. Blood and tissue donation screening policies have significantly reduced
transmission in endemic countries but are not universally established in the non-endemic setting. Antenatal screening is not commonly
done. Other challenges include difficulties accessing and retaining patients in the healthcare system and lack of specific funding for the
interventions. Any strategy must be accompanied by education and awareness campaigns directed to patients, professionals and policy
makers. The involvement of patients and their communities is central and key for success and must be sought early and actively. This review
proposes strategies to address challenges faced by non-endemic countries
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Chagas disease (CD), caused by the parasite Trypanosoma cruzi, affects ~6–7 million people worldwide. Significant limitations still exist in our understanding of CD. Harnessing individual participant data (IPD) from studies could support more in-depth analyses to address the many outstanding resea...rch questions. This systematic review aims to describe the characteristics and treatment practices of clinical studies in CD and assess the breadth and availability of research data for the potential establishment of a data-sharing platform.
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Chagas disease (CD) is a neglected tropical disease, endemic in Latin America, but due to migration and environmental changes it has become a global public health issue.
Chagas disease constitutes a public health problem, and Spain is the non-endemic country with the highest burden of disease outside the Americas. It represents a model for non-endemic countries regarding health policies to control the disease. This study is aimed to generate estimates of the T.cruzi... prevalence and the number of undetected and untreated individuals with the infection in Spain and to compare them with the actual number of cases reported by official sources.
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Little progress has been made since the 1960s and 1970s to widen the therapeutic arsenal against Trypanosoma cruzi, the causative pathogen of Chagas disease, which remains a frustrating and perplexing infectious disease. This chapter focuses on the strategic and operational challenges in the clinica...l drug development of a novel antitrypanosomal agent for Chagas disease. The various elements that contribute to a robust assessment of treatment effect including dose selection, choice of patient population, trial methodology, endpoint measures, and regulatory perspectives are discussed. The learnings herein should serve as resource to help researchers and other stakeholders optimize their clinical development plans and speed delivery of new medicines to patients with Chagas disease.
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Chagas disease (CD) is caused by Trypanosoma cruzi. When acquired, the
disease develops in stages. For diagnosis, laboratory confirmation is required, and an extensive assessment of the patient’s health should be performed. Treatment consists of the administration of trypanocidal drugs, which may... cause severe adverse effects. The objective of our systematic review was to analyze data contained in the CD published case reports to understand the challenges that patients and clinicians face worldwide.
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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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Coherent Market Insights has announced the addition of Chagas Disease Treatment Market 2023 Forecast Analysis by Types, Applications, Size, Share, Key Players, and Regions. a new research report to its market research archive. The Chagas Disease Treatment Market has been thoroughly researched and an...alyzed by industry experts and researchers. The industry is examined at the global, regional, and national levels. The report highlights the primary revenue stream for the estimated year, along with sales volumes, growth patterns, and major industry market dynamics. The historical data is provided, as well as a comprehensive revenue analysis for the forecast period. The report focuses on the size, share, growth status, and future trends of the Chagas Disease Treatment Market, as well as recent business developments.
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