The threat posed by Zika virus infection highlights the need to reinforce preparedness arrangements for mosquito-borne diseases in EU/EEA countries, especially for pathogens transmitted by Aedes aegypti and
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Aedes albopictus.
The aim of this document is to highlight measures that can effectively reduce the risk of importation and local transmission of pathogens transmitted by Ae. aegypti and Ae. albopictus. The main diseases of concern in this context are Zika, dengue, chikungunya and yellow fever.
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Interim guidance for entomologists.
This document describes selected sampling methods that can be used to conduct surveillance of Aedes mosquitoes, pupae and oviposition. It is intended for qualified entomologists at national and sub-national level
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who are responsible for the surveillance of local Aedes populations.
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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.
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,
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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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Dengue is a mosquito-borne viral disease that occurs mainly in the tropics and subtropics but has a high potential to spread to new areas. Dengue infections are climate sensitive, so it is important to better understand how changing climate factors affect the potential for geographic spread and futu
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re dengue epidemics. Vectorial capacity (VC) describes a vector's propensity to transmit dengue taking into account human, virus, and vector interactions. VC is highly temperature dependent, but most dengue models only take mean temperature values into account. Recent evidence shows that diurnal temperature range (DTR) plays an important role in influencing the behavior of the primary dengue vector Aedes aegypti. In this study, we used relative VC to estimate dengue epidemic potential (DEP) based on the temperature and DTR dependence of the parameters of A. aegypti. We found a strong temperature dependence of DEP; it peaked at a mean temperature of 29.3°C when DTR was 0°C and at 20°C when DTR was 20°C. Increasing average temperatures up to 29°C led to an increased DEP, but temperatures above 29°C reduced DEP. In tropical areas where the mean temperatures are close to 29°C, a small DTR increased DEP while a large DTR reduced it. In cold to temperate or extremely hot climates where the mean temperatures are far from 29°C, increasing DTR was associated with increasing DEP. Incorporating these findings using historical and predicted temperature and DTR over a two hundred year period (1901-2099), we found an increasing trend of global DEP in temperate regions. Small increases in DEP were observed over the last 100 years and large increases are expected by the end of this century in temperate Northern Hemisphere regions using climate change projections. These findings illustrate the importance of including DTR when mapping DEP based on VC.
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Zika virus is primarily transmitted by the Aedes species of mosquito which is also responsible for the spread of dengue, Chikungunya and yellow fever viruses. In most areas, the primary vector of these viruses is
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Aedes aegypti, with Aedes albopictus a proven or potential vector in some settings. Well-implemented vector control against Aedes using existing tools effectively reduces the transmission of viruses spread by these vectors. Pilot studies are being undertaken on new tools which have potential for future reductions in Aedes populations
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This document provides recommendations on essential measures to protect the health and safety of operators and other persons involved in emergency vector control of Aedes spp. mosquitoes, including space spraying of insecticides, larvicide applicati
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on and, in some cases, indoor residual spraying. It is intended to be used by vector control managers and operators, public health workers, medical professionals, district health officers and ministries of health.
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The use of safe and efficacious insecticides against the adult and larval populations of mosquito vectors is one of the most effective ways to rapidly interrupt transmission of Zika virus, as well as other viruses transmitted by Aedes mosquitoes suc
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h as chikungunya and dengue.
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The purpose of this handbook is to provide guidance to Member States on the practical aspects of maintaining sanitary standards at international borders at ports, airports, and ground crossings (points of entry) as set out in the International Health Regulations (2005). It provides technical advice
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for developing a comprehensive programme for systematic monitoring of disease vectors and integrated vector control at points of entry. This includes standardizing procedures at points of entry and ensuring a sufficient monitoring and response capacity with the necessary infrastructure for surveillance and control of vectors. In addition, this handbook to serves as reference material for port health officers, regulators, port operators, and other competent authorities in charge of implementing the IHR (2005) at points of entry and on conveyances.
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Dúvidas para combater a dengue? Nosso agente de saúde ensina como eliminar os focos do mosquito. Proteja-se dessa ameaça.
Please click on the external link to watch the video.
https://www.youtube.com/watch?v=_ReeOzfk8dE
Le présent manuel a pour objet d'orienter les États membres sur les aspects pratiques du maintien des normes sanitaires aux frontières internationales dans les ports, les aéroports et les passages à niveau (points d'entrée) énoncés dans le Règlement sanitaire international (2005). Il fourni
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t des conseils techniques pour l'élaboration d'un programme complet de surveillance systématique des vecteurs de maladies et de lutte intégrée contre les vecteurs aux points d'entrée.
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LINEAMIENTO TÉCNICO PARA JORNADAS DE LAVADO Y CEPILLADO DE TANQUES DE ALMACENAMIENTO DE AGUA DE USO DOMÉSTICO Y DEPÓSITOS DE AGUA DE USO INSTITUCIONAL, COMO MEDIDA DE PREVENCIÓN ANTE LA INFESTACIÓN POR AEDES AEGYPTI PARA DENGUE, CHIKUNGUÑA , Z
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IKA Y OTRAS ENFERMEDADES TRANSMTIDAS POR VECTORES EN COLOMBIA.
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4th Edition 2018
National Malaria Elimination & Aedes Transmitted Disease Control Program
Disease Control Unit Directorate General of Health Services
Dengue is the fastest spreading, mosquito-borne viral infectious disease worldwide, with remarkable morbidity and mortality. In the past decades, profound contributions have been made towards understanding its epidemiology, including disease burden and distributions, risk factors, and control and pr
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evention practices. Dengue continues to disseminate to new areas, including high latitude regions, and a new serotype (dengue virus serotype 5) has been identified. Vaccine research has made new progress, in which the licensed yellow fever and dengue virus quadrivalent chimeric vaccine is now under further safety assessment. In disease surveillance, because of its operational simplicity, rapidity, capability, and utility as an indicator of disease severity, dengue virus NS1 antigen detection has great promotion and application value among primary health care institutions. Vector control progress has driven new breakthroughs in biotechnology, including Wolbachia-infected Aedes and genetically modified Aedes. Both Aedes variants have been used to block transmission of the dengue virus through population replacement and suppression. In the future, vector control should still be pursued as a key measure to prevent transmission, along with anti-viral drug and vaccine research.
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FAQs on Dengue, Chikungunya and Zika (Portuguese). Link to website of Brasilian Government.