Dúvidas para combater a dengue? Nosso agente de saúde ensina como eliminar os focos do mosquito. Proteja-se dessa ameaça.
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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 who are responsible for the surveillance of local ...Aedes populations.
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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...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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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 such as chikungunya and dengue.
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 Aedes albopictus.
The aim of this document is to highlight measures that can effectively red...uce 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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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 application 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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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.
DM for Care
In northeastern Nigeria—“Boko Haram’s den”—at least 3 in 10 people suffer from untreated mental illness. Despite high suicide rates and risks of radicalization, care is reserved for treating substance use or disorders like schizophrenia.
Nonprofits like NEEM Foundation a...nd Mentally Aware Nigeria Initiative are working to provide mental health first aid via Twitter and Whatsapp. NEEM also helps reintegrate former Boko Haram fighters, and MANI runs a suicide hotline and advocates for decriminalizing suicide attempts.
“Our counselors are volunteer psychiatrists and medical officers that are, a lot of times, the thin line between life and death,” says MANI’s Rasheedat Olarinoye.
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Technical Report
AIDS Medicines and diagnostics service
September 2016
National Malaria Elimination & Aedes Transmitted Diseases Control Program
6th Version 2019
July 2019
National Malaria Elimination & Aedes Transmitted Disease Control Program
Disease Control Division
Derectorate General of Health Services
4th Edition 2018
National Malaria Elimination & Aedes Transmitted Disease Control Program
Disease Control Unit Directorate General of Health Services
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 Aedes aegypti, with Aedes albopictus a proven or potential vector in some settings. Wel...l-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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Chikungunya fever (CHIKF) is an emerging infectious disease caused by an alphavirus transmitted by Aedes spp. mosquitoes. Because mosquito control programs are not highly efficient for outbreak containment, vaccines are essential to reduce the burden of disease. Although no licensed vaccine against ...CHIKF is yet available, many highly promising candidates are undergoing preclinical studies, and a few of them have been tested in human trials of phase 1 or 2. Here, we review recent findings regarding the need for a CHIKF vaccine and provide an update on vaccines nearing or having entered clinical trials. We also address needs to tackle bottlenecks to vaccine development—including scientific and financial barriers—and to accelerate the development of vaccines; several actions should be taken:
(i) design efficacy trials to be conducted during the course of outbreaks;
(ii) evaluate the opportunity for adopting the “animal rule”for demonstration of efficacy for regulatory purposes;
(iii) strengthen the collective commitment of nations, international organizations, potential donors and industry;
(iv) stimulate public and/or private partnerships to invest in vaccine development and licensure; and
(v) identify potential markets for an effective and safe CHIKF vaccine.
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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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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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Websites last accessed on 31.03.2023
Dengue, Dengue virus, dengue hemorrhagic fever, dengue fever, flavivirus, Aedes mosquitoes, DHF, DF, DSS