Mosquito-borne diseases are expanding their range, and re-emerging in areas where they had subsided for decades. The extent to which climate change influences the transmission suitability and population at risk of mosquito-borne diseases across different altitudes and population densities has not be...en investigated. The aim of this study was to quantify the extent to which climate change will influence the length of the transmission season and estimate the population at risk of mosquito-borne diseases in the future, given different population densities across an altitudinal gradient.
The Lancet Planetary Health Volume 5, ISSUE 7, e404-e414, July 01, 2021
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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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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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In the light of the transmissibility of coronaviruses, and the global experience with MERS-CoV (ongoing) and SARS in 2003 which were also caused by coronaviruses, South African authorities have compiled this guideline document to support surveillance, case finding, diagnosis, management and public h...ealth responses to cases under investigation.
*Please note*
The interim guidelines are based on what is currently known about the Coronavirus Disease 2019 (COVID-19). The National Department of Health (NDOH) and National Institute for Communicable Diseases will update these interim guidelines as needed and as additional information becomes available.
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Epidemics of infectious diseases are occurring more often, and spreading faster and further than ever, in many different regions of the world. The background factors of this threat are biological, environmental and lifestyle changes, among others. A potentially fatal combination of newly-discovered ...diseases, and the re-emergence of many long-established ones, demands urgent responses in all countries. Planning and preparation for epidemic prevention and control are essential. The purpose of this “Managing epidemics” manual is to provide expert guidance on those responses.
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Cases of monkeypox (MPX) acquired in the EU have recently been reported in nine EU Member States (Austria, Belgium, France, Germany, Italy, Portugal, Spain, Sweden, and the Netherlands).
Monkeypox (MPX) does not spread easily between people. Human-to-human transmission occurs through close contact ...with infectious material from skin lesions of an infected person, through respiratory droplets in prolonged face-to-face contact, and through fomites. The predominance, in the current outbreak, of diagnosed human MPX cases among men having sex with men (MSM), and the nature of the presenting lesions in some cases, suggest transmission occurred during sexual intercourse
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Human activities are driving fundamental changes to the biosphere and disrupting many of our planet’s natural systems. There is increasing scientific evidence that the unfolding climate crisis, global pollution, unprecedented levels of biodiversity loss, and pervasive changes in land use and cover... threaten nearly every dimension of human health and wellbeing
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This guide also draws on the standard operating procedures (SOPs) to apply for measles outbreak response
support from the Measles & Rubella Initiative Outbreak Response Fund (17) and includes a section on
measles outbreak recovery so that contributing factors and potential root causes are identifi...ed and
addressed systematically after a measles outbreak. This guide does not aim to be a comprehensive guide
on measles elimination or routine immunization (RI) more broadly.
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Infectious disease outbreaks and epidemics are increasing in frequency, scale and impact. Health care facilities can amplify the transmission of emerging infectious diseases or multidrug-resistant organisms (MDRO) within their settings and communities. Therefore, evidence-based infection prevention ...and control (IPC) measures in health care facilities are critical for preventing and containing outbreaks, while still delivering safe, effective and quality health care. This toolkit is intended to support IPC improvements for outbreak management in all such facilities, both public and private throughout the health system. Specifically, this document systematically describes a framework of overarching principles to approach the preparedness, readiness and response outbreak management phases. The document also provides a toolkit of resource links to guide specific actions for each infectious disease and/or MDRO outbreak management phase at any health facility. This document is specifically tailored to an audience of stakeholders who establish and monitor health care facility-level IPC programs including: IPC focal points, epidemiologists, public health experts, outbreak response incident managers, facility-level IPC committee(s), safety and quality leads and managers, and other facility level IPC stakeholders.
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The position papers are intended for use by national public health officials and managers of immunization programmes. They may also be of interest to international funding agencies, vaccine advisory groups, vaccine manufacturers, health professionals, researchers, the scientific media and the genera...l public.
Les notes de synthèse s’adressent aux responsables nationaux de la santé publique et aux administrateurs des programmes de vaccination, mais elles peuvent également présenter un intérêt pour les organismes internationaux de financement, les groupes consultatifs sur la vaccination, les fabricants de vaccins, les professionnels de la santé, les chercheurs, les médias scientifiques et le grand public.
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The World Health Organization (WHO) convened a meeting of the Technical Advisory Group on Buruli ulcer at its headquarters in Geneva, Switzerland on 25 to 27 March 2019
The purpose of this book is to provide an overview of Buruli ulcer (Mycobacterium ulcerans infection) for the medical and scientific communities and the general public alike.
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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Nat Commun 9, 5370 (2018). https://doi.org/10.1038/s41467-018-07804-8. Mycobacterium ulcerans is the causative agent of Buruli ulcer, a neglected tropical skin disease that is most commonly found in children from West and Central Africa. Despite the severity of the infection, therapeutic options are... limited to antibiotics with severe side effects. Here, we show that M. ulcerans is susceptible to the anti-tubercular drug Q203 and related compounds targeting the respiratory cytochrome bc1:aa3. While the cytochrome bc1:aa3 is the primary terminal oxidase in Mycobacterium tuberculosis, the presence of an alternate bd-type terminal oxidase limits the bactericidal and sterilizing potency of Q203 against this bacterium. M. ulcerans strains found in Buruli ulcer patients from Africa and Australia lost all alternate terminal electron acceptors and rely exclusively on the cytochrome bc1:aa3 to respire. As a result, Q203 is bactericidal at low dose against M. ulcerans replicating in vitro and in mice, making the drug a promising candidate for Buruli ulcer treatment.
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January 2020 to December 2021
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.
In collaboration with partners, the government of Ethiopia has successfully developed 10 years Hand Hygiene for All (HH4A) costed national roadmap- a country-wide approach to achieving sustainable and universal hand hygiene. On the occasion of the 2022 Global Hand Washing Day event ( Ethiopia is cel...ebrating the event for one month with different sessions), the national HH4A road map launched on the 4th of Nov 2022 in a high-level advocacy event in the presence of higher officials and partners. Action is set mainly on the need for a joint effort to mobilize resources for implementation, monitoring and documenting of lessons and best practices.
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April 2022 Volume 35 Issue 2 e00152-21
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 t...he 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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This document compiles the recommendations made by the World Health Organization (WHO) and the Pan American Health Organization (PAHO) to help professionals in charge of vector control programs in Latin America and the Caribbean at the national, subnational, and local level update their knowledge in... order to make evidence-based decisions on the most appropriate control measures for each specific situation. IVM can be used for surveillance and control or for elimination of VBDs and can help reduce the development of insecticide resistance through the rational use of these products. This document provides instructions for fulfillment of the 2008 PAHO mandate set forth in CD 48/13 (Integrated Vector Management).
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El presente documento reúne un conjunto de recomendaciones formuladas por la Organización Mundial de la Salud (OMS) y la Organización Panamericana de la Salud (OPS) para ayudar, a los profesionales encargados de los programas de control de vectores de Latinoamérica y el Caribe a nivel nacional, ...subnacional y local, a actualizar y tomar decisiones basadas en la evidencia sobre las medidas de control más apropiadas para cada situación específica. El MIV puede utilizarse cuando la meta es la vigilancia y el control o la eliminación (dependiendo de la situación específica) de las ETV y puede contribuir a reducir el desarrollo de la Resistencia a los insecticidas mediante el uso racional de estos productos. Este documento contiene las instrucciones para llevar a cabo el mandato de la OPS del 2008 sobre el control integrado de vectores (resolución CD48.R8, documento CD48/13) y, en particular, complementa una serie de guías de la OMS publicadas en el 2012
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