World Health Organization Country profiles 2017
Published: November 24, 2020 https://doi.org/10.1371/journal.pbio.3000938
Climate change is expected to have complex effects on infectious diseases, causing some to increase, others to decrease, and many to shift their distributions. There have been several important advances in understanding the ...role of climate and climate change on wildlife and human infectious disease dynamics over the past several years. This essay examines 3 major areas of advancement, which include improvements to mechanistic disease models, investigations into the importance of climate variability to disease dynamics, and understanding the consequences of thermal mismatches between host and parasites. Applying the new information derived from these advances to climate–disease models and addressing the pressing knowledge gaps that we identify should improve the capacity to predict how climate change will affect disease risk for both wildlife and humans.
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The larval stage of the parasite Taenia solium can encyst in the central nervous system causing neurocysticercosis, which is the main cause of acquired epilepsy in the countries in which the parasite is endemic. Endemic areas are those with the presence (or likely presence) of the full life cycle of... Taenia solium. The parasite is most prevalent in poor and vulnerable communities in which pigs roam free, open defecation is practiced, basic sanitation is deficient, and health education is absent or limited. Several tools are available for the control of Taenia solium. Preventive chemotherapy for Taenia solium taeniasis, which is directed at the adult tapeworm, is one of them. Other tools focus on pig management, pig vaccination and treatment, sanitation and hygiene, and community education. Three potential drugs—niclosamide, praziquantel, and albendazole—have been considered for use for preventive chemotherapy in Taenia solium taeniasis control programs through mass drug administration or targeted chemotherapy. In this Guideline, we provide recommendations for preventive chemotherapy in Taenia solium-endemic areas using niclosamide, praziquantel, or albendazole, including at which dose and in which population groups.
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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 toolkit for integrated vector management (IVM) is designed to help national and regional programme managers coordinate across sectors to design and run large IVM programmes.
The toolkit provides the technical detail required to plan, implement, monitor and evaluate an IVM approach. IVM can be ...used when the aim is to control or eliminate vector-borne diseases and can also contribute to insecticide resistance management. This toolkit provides information on where vector-borne diseases are endemic and what interventions should be used, presenting case studies on IVM as well as relevant guidance documents for reference.
The diseases that are the focus of this toolkit are malaria, lymphatic filariasis, dengue, leishmaniasis, onchocerciasis, human African trypanosomiasis and schistosomiasis. It also includes information on other viral diseases (Rift Valley fever, West Nile fever, Chikungunya, yellow fever) and trachoma. If other vector-borne diseases appear in a country or area, vector control with an IVM approach should be adopted, as per national priorities.
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All malaria-endemic countries in the Region of the Americas have taken on the challenge of eliminating malaria and have focused their health programs and strategies on that goal. The risk of emergence of artemisinin resistance in the Americas, the characteristics of P. falciparum parasite, and the e...pidemiological evidence of subnational territories experiencing reintroduction of P. falciparum urge for a call to push for P. falciparum elimination as an intermediate goal of the elimination of all malaria human species. Derived from the elimination of P. falciparum, other important results are expected, such as the empowerment of different actors and entities for the elimination of malaria inspired by the achievements of the elimination of P. falciparum, using early victories as a catalyst. This technical note provides guidance on actions to accelerate P. falciparum elimination in areas close to achieving this goal without compromising unified malaria elimination efforts (P. vivax - P. falciparum), while contributing to the country's ultimate goal of eliminating malaria overall. The acceleration of P. falciparum elimination has several goals: mitigating the risk that resistance to artemisinin and associated drugs will emerge and spread; accelerating the reduction in the total number of malaria cases in areas with a significant proportion of P. falciparum; accelerating malaria elimination (both P. vivax and P. falciparum), considering that P. falciparum is one of the triggers of P. vivax relapses; developing capacities in interventions to accelerate malaria elimination by building on the experience of P. falciparum elimination; and empowering different actors, including high-level authorities, donors, municipalities, and other entities involved in malaria elimination, by inspiring them with the achievements of P. falciparum elimination.
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Preferred product characteristics” (PPCs) are key tools to incentivize and guide the development of urgently needed health products. The PPC published here describes the characteristics of new types of insecticide-treated nets (ITNs) to control malaria transmission in areas with insecticide-resist...ant mosquito populations. The document was developed to address the public health need caused by the evolution and spread of insecticide resistance, particularly to pyrethroids. Such resistance threatens the effectiveness of the current standard of malaria vector control in many countries, namely pyrethroid-only long-lasting insecticidal nets (LLINs).
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This action plan is intended for senior-level decision-makers in ministries of health, malaria
programme managers, entomologists, and epidemiologists working on malaria and other vectorborne diseases programmes. It is also intended for decision-makers and technical and advocacy
staff at other orga...nizations and stakeholders involved in public health, malaria control and
elimination, and urban and rural development.
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25 Nov 2022
The WHO Guidelines for malaria bring together the Organization’s most up-to-date recommendations for malaria in one user-friendly and easy-to-navigate online platform.
The WHO Guidelines for malaria supersedes 2 previous WHO publications: the Guidelines for the treatment of mala...ria, third edition and the Guidelines for malaria vector control. Recommendations on malaria will continue to be reviewed and, where appropriate, updated based on the latest available evidence. Any updated recommendations will always display the date of the most recent revision in the MAGICapp platform. With each update, a new PDF version of the consolidated guidelines will also be available for download on the WHO website.
This version of the Guidelines includes updates to the case management of malaria, specifically the addition of new molecules for the treatment of uncomplicated malaria and optimization of the dosage regimen for anti-relapse treatment, along with updates on the use of antimalarial medicines in special risk populations including pregnant women.
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Cities are uniquely positioned to understand local needs and respond rapidly to changing conditions to safeguard health. These changes require strong city leadership to implement multisectoral, health-relevant policies and public services that engage communities. The response to malaria must be an i...ntegral part of such policies and processes.
This framework supports the control and elimination of malaria in urban environments. It provides guidance for city leaders, health programmes and urban planners as they respond to the challenges of rapid urbanization in a targeted way. For each urban context, the strategic use of data can inform effective, tailored responses and help build resilience against the threat of malaria and other vector-borne diseases.
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Environmental Research Volume 151, November 2016, Pages 115-123
Dengue is the world’s most important arboviral disease in terms of number of people affected. Over the past 50 years, incidence increased 30-fold: there were approximately 390 million infections in 2010. Globalization, trade, travel,... demographic trends, and warming temperatures are associated with the recent spread of the primary vectors Aedes aegypti and Aedes albopictus and of dengue. Overall, models project that new geographic areas along the fringe of current geographic ranges for Aedes will become environmentally suitable for the mosquito’s lifecycle, and for dengue transmission. Many endemic countries where dengue is likely to spread further have underdeveloped health systems, increasing the substantial challenges of disease prevention and control. Control focuses on management of Aedes, although these efforts have typically had limited effectiveness in preventing outbreaks. New prevention and control efforts are needed to counter the potential consequences of climate change on the geographic range and incidence of dengue, including novel methods of vector control and dengue vaccines.
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A qualitative assessment of knowledge gaps about female genital schistosomiasis among communities living in Schistosoma haematobium endemic districts of Zanzibar and Northwestern Tanzania.
PloS Neglected Tropical Diseases September 30, 2021 https://doi.org/10.1371/journal.pntd.0009789
Schistosoma... haematobium causes urogenital schistosomiasis and is widely distributed in Tanzania. In girls and women, the parasite can cause Female Genital Schistosomiasis (FGS), a gynecological manifestation of schistosomiasis that is highly neglected and overlooked by public health professionals and policy makers. This study explored community members’ knowledge, attitudes and perceptions (KAP) on and health seeking behavior for FGS.
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This template dossier complements and should be used after fulfilling the criteria and preconditions specified in the Process of validation of elimination of kala-azar as a public health problem in South-East Asia. The national kala-azar programme should be in the consolidation phase of elimination;... that is, the annual incidence of kala-azar in the implementation unit is maintained below 1 case (new plus relapse) per 10 000 population for a minimum of 3 consecutive years.
The template is designed to help national kala-azar elimination programmes prepare a dossier documenting the essential evidence supporting the request to the World Health Organization (WHO) to validate the status of kala-azar elimination as a public health problem in their country. The information presented in this document will help independent assessors understand the national programme’s specific context, achievements and relevant epidemiological data.
The dossier should be organized according to the following sections:
- Description of the country context and health system capabilities
- Historical data and delineation of endemic areas
- Surveillance and elimination activities
- Epidemiological data
- Vector control strategy and activities
- Post-validation surveillance plan
Once the dossier is prepared, it should be examined and duly endorsed by the National Task Force on kala-azar elimination and/or neglected tropical diseases, or a similar body, before submission to WHO.
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The document “Malaria Elimination Programme Review, India 2022”, published by the WHO Country Office for India, provides an in-depth assessment of India’s progress toward malaria elimination. It evaluates the structure, implementation, and effectiveness of national and subnational malaria prog...rams, focusing on surveillance, diagnosis, treatment, vector control, and community engagement. The review identifies strengths, challenges, and areas for improvement, offering evidence-based recommendations to accelerate India's efforts to eliminate malaria by 2030.
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Effective malaria case management requires quick access to diagnostics and antimalarial treatments to reduce illness and death. Artemisinin-based combination therapy (ACT) has been essential to malaria treatment since 2001, as it combines artemisinin for rapid parasite reduction with a partner drug ...to ensure complete cure. However, resistance to antimalarial drugs, where parasites survive standard doses, threatens malaria control.
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More countries eliminate human African trypanosomiasis as a public health problem: Benin and Uganda (gambiense form) and Rwanda (rhodesiense form)
Human African trypanosomiasis (HAT), or sleeping sickness, transmitted by tsetse flies in sub-Saharan Africa, is a life-threatening disease that afflict...s poor rural populations. It is caused by trypanosome parasites of 2 subspecies: Trypanosoma brucei gambiense in West and Central Africa, and T. b. rhodesiense in East Africa.
HAT transmission can be reduced and interrupted by deploying and maintaining capacities for testing people at risk in order to detect and treat cases, and by controlling tsetse populations that are in contact with humans.
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The Strategy to respond to antimalarial drug resistance in Africa is a technical and advocacy document, grounded in the best available evidence to date and aimed at minimizing the threat and impact of antimalarial drug resistance of Plasmodium falciparum parasites in Africa. Its objectives are to: i...) improve the detection of resistance to ensure a timely response; ii) delay the emergence of resistance to artemisinin and artemisinin-based combination therapy (ACT) partner drugs; and iii) limit the selection and spread of resistant parasites where resistance has been confirmed.
WHO Team
Global Malaria Programme
Editors
World Health Organization
Number of pages
87
Reference numbers
ISBN: 978 92 4 006026 5
Copyright
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Over 6 million people worldwide are infected with Trypanosoma cruzi, the protozoan that causes Chagas disease. Endemic in 21 Latin American countries, the disease can be transmitted by vector insects called triatomines — also known as “kissing bugs” —, foods or beverages contaminated with th...e parasite, blood transfusions, organ transplants, or congenitally during pregnancy or delivery.
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