Leishmaniasis is a climate-sensitive disease. Changes in temperature, rainfall, and humidity can have strong impacts on
the sandfly vector, altering their distribution and influencing their survival and population sizes. Increased temperatures shorten vector development time, reduce Leishmania para...site incubation time, and increase vector biting rates, allowing transmission
in areas not previously endemic for the disease. Poor and
marginalized communities will be hit disproportionately harder by
the effects of climate change, and droughts, famines, and floods
can also lead to displacement and migration of immunologically
naive people to areas where leishmaniasis is endemic, posing a
threat of leishmaniasis outbreaks.
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Climate risks have significant effects on public health including: injury, death, communicable diseases such as vector-borne and water-borne diseases, and non-communicable impacts such as malnutrition, heat stress and health effects of air pollution.
The risk of communicable diseases remains a humanitarian concern with major health risks including cholera, acute watery diarrhea, bloody diarrhea, malaria and other vector borne diseases and conditions such as severe acute malnutrition.
Access to the affected districts is still conditioned due t...o the destruction of roads, the telecommunications network and the interruption of electricity.
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Advances have been made through expanded interventions delivered through five public health approaches: innovative and intensified disease management; preventive chemotherapy; vector ecology and management; veterinary public health services; and the provision of safe water, sanitation and hygiene. I...n 2015 alone nearly one billion people were treated for at least one disease and significant gains were achieved in relieving the symptoms and consequences of diseases for which effective tools are scarce; important reductions were achieved in the number of new cases of sleeping sickness, of visceral leishmaniasis in South-East Asia and also of Buruli ulcer.
The report also considers vector control strategies and discusses the importance of the draft WHO Global Vector Control Response 2017–2030.
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Over the past 50 years, dengue has spread from nine to over a hundred countries, making it the most rapidly spreading vector-borne disease. Yet, dengue continues to have a low profile among policy-makers and donors and does not receive the media attention it deserves. While there is no vaccine or cu...re for dengue, it can be managed and prevented. We need a renewed commitment to integrated programming that includes improved management and diagnosis, increased awareness and community participation in controlling the vector and enhanced environmental sanitation
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The WHO Malaria Threats Map is an interactive online platform that showcases the latest global data on four critical biological threats to effective malaria control and elimination: mosquito insecticide resistance, Plasmodium falciparum hrp2/3 gene deletions, antimalarial drug resistance, and the ...spread of invasive vector species. Designed for public health professionals and researchers, the map allows users to explore and filter data regionally, track emerging resistance patterns, and view visual trends. Its purpose is to inform strategies for surveillance, guide policy-making, and support efforts to eliminate malaria, particularly by anticipating and responding to biological challenges that could undermine control programs.
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Surveillance is a core malaria intervention. Data standards, tools and curricula materials have been developed to support countries to strengthen and monitor national routine surveillance systems and to support use of data for decision-making in all transmission settings. These standards have been d...eveloped into malaria modules in DHIS2 for countries using this platform. These tools comprise: modules for burden reduction and elimination settings; aggregate module; case-based module and modules for entomological surveillance and vector control interventions
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This document outlines the best practices for mosquito control and surveillance in United Nations duty stations affected by mosquito-borne diseases. It sets out an integrated vector management (IVM) approach combining environmental, biological, mechanical, chemical and personal protection strategies... to reduce mosquito populations and the transmission of diseases. Key elements include targeted control of larval and adult mosquitoes, the proper use of insecticides, community engagement, and ongoing surveillance.
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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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PAHO has systematically identified and collected basic information on all investigations related to Zika, both those already published and those on track to be published.
Each study has been categorized in the areas of virus, vectors and reservoirs; epidemiology; disease pathogenesis and consequen...ces of Zika infection; clinical management; public health interventions; health systems and services response; research and product development; and causality. You can also search by publication type: published articles, protocol and publication of preliminary results.
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Overview
16 Dec 2021. This interim guidance pertains to heterologous primary and heterologous boosting schedules of Covid-19 vaccines. It focuses on heterologous schedules combining multiple vaccine platforms (e.g. a vectored vaccine followed by an mRNA vaccine).
PLoS Negl Trop Dis 10(3): e0004530 -Published: March 2, 2016
This paper reviews the status of the Zika virus outbreak, including medical countermeasureoptions, with a focus on how the epidemiology, insect vectors, neuropathology, virology and immunology inform options and strategies available for m...edical countermeasure development and deployment.
Please download directly from the website Open Access: http://journals.plos.org/plosntds/article/asset?id=10.1371%2Fjournal.pntd.0004530.PDF
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Chagas disease is named after the Brazilian physician Carlos Chagas, who discovered the disease in 1909. It is caused by the parasite Trypanosoma cruzi, which is transmitted to animals and people by insect vectors and is found only in the Americas (mainly, in rural areas of Latin America where pover...ty is widespread). Chagas disease (T. cruzi infection) is also referred to as American trypanosomiasis
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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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Arbovirus (arthropod-borne virus) is defined as any virus that is transmitted to humans and/or other vertebrates by certain species of blood-feeding arthropods, mostly insects (flies and mosquitoes) and arachnids (ticks). Arbovirus is a descriptive term based on transmission by vectors with particul...ar characteristics. It is not part of the International Committee on Taxonomy of Viruses classification of viruses (ie, it is not a species, genus, or family), which is based on the nature and structure of the viral genome
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This infographic poster provides key information on the prevention, transmission and control of malaria in Southeast Asia. It highlights regional challenges, the behaviour of malaria vectors, and community-based strategies to build resilience against the disease. Designed for public health workers a...nd communities, its purpose is to raise awareness and promote effective malaria interventions that will reduce the disease's burden on the region. Accessed June 2025
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In the battle against diseases like Zika and dengue, knowledge is power. Climate change is shifting the
distribution of mosquitoes and to new areas. Empowering communities is essential in reaching and pro-
tecting the most vulnerable individuals and households. Vector control programmes, community... empow-
erment and awareness campaigns are proven strategies to reduce the burden of vector-borne diseases.
Red Cross and Red Crescent volunteers can play a key role in community and school outreach activities for Zika, dengue and chikungunya prevention. These community-based activities need to be sustained to
ensure long-lasting disease control.
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This open access book not only describes the challenges of climate disruption, but also presents solutions. The challenges described include air pollution, climate change, extreme weather, and related health impacts that range from heat stress, vector-borne diseases, food and water insecurity and ch...ronic diseases to malnutrition and mental well-being.
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Climate change is a verified, global phenomenon, but its consequences will not be evenly distributed. Developing countries and small island nations will be the most affected. Countries will experience more frequent extreme weather events and resulting changes in water quality and availability, incre...ased contamination of air, and food security problems. Health impact due to climate change include diarrhoeal diseases, vector-borne diseases, heat stress, malnutrition, deaths and injuries due to extreme weather events and mental stress.
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