Live from Geneva: Q & A on #Dengue

Source: World Health Organization (WHO). Published: 8/14/2019. This 25-minute video features live responses from an expert to questions about dengue, which is transmitted through Aedes aegypti and Aedes Albopictus mosquitoes, also known as Asian tiger mosquitoes. These are the same mosquitoes that transmit chikungunya, yellow fever, and Zika. Topics include identifying the warning signs and symptoms of severe dengue, and complications caused by dengue. (Video or Multimedia)
Source: Disaster Lit: Resource Guide for Disaster Medicine and Public Health - Category: International Medicine & Public Health Source Type: news

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ver The unprecedented outbreak of Zika virus (ZIKV) infection in the Americas from 2015 to 2017 prompted the publication of a large body of vector competence data in a relatively short period of time. Although differences in vector competence as a result of disparities in mosquito populations and viral strains are to be expected, the limited competence of many populations of the urban mosquito vector, Aedes aegypti, from the Americas (when its susceptibility is viewed relative to other circulating/reemerging mosquito-borne viruses such as dengue (DENV), yellow fever (YFV), and chikungunya viruses (CHIKV)) has proven a ...
Source: Viruses - Category: Virology Authors: Tags: Review Source Type: research
DiscussionChikungunya outbreaks have been reported in the study area in the past, so the high seroprevalence is not surprising. However, scarce evidence exists on dengue transmission in Kinshasa and based on our data, circulation is more important than previously reported. Furthermore, our study shows that the prescription of antibiotics, both antibacterial and antimalarial drugs, is rampant. Studies like this one, elucidating the causes of acute fever, may lead to a more considerate and rigorous use of antibiotics. This will not only stem the ever-increasing problem of antimicrobial resistance, but will –ultimately ...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
A Danish and Taiwanese company has won Australia’s Good Design Award for a portable diagnostic device—small enough to fit in a camera case—that allows diagnosis of infectious diseases on the spot from a single drop of blood. “The Good Design Award ranked BluBox as the best solution for the rapid and accurate assessment of communicable diseases in heavily populated as well as resource-constrained, expertise-lacking areas,” explained Filippo Bosco, CEO and one of the three founders of BluSense Diagnostics (Copenhagen). The secret inside...
Source: MDDI - Category: Medical Devices Authors: Tags: IVD Source Type: news
Publication date: Available online 28 August 2019Source: Pesticide Biochemistry and PhysiologyAuthor(s): Annamalai Thanigaivel, Kanagaraj Muthu-Pandian Chanthini, Sengodan Karthi, Prabhakaran Vasantha-Srinivasan, Athirstam Ponsankar, Haridoss Sivanesh, Vethamonickam Stanley-Raja, Narayanan Shyam-Sundar, Kilapavoor Raman Narayanan, Sengottayan Senthil-NathanAbstractAedes aegypti is a major mosquito vector that can transfer many deadly diseases such as dengue, chikungunya, Zika, and yellow fever viruses. Due to the developing resistance among the vector populations by the application of chemical insecticides, alternative eco...
Source: Pesticide Biochemistry and Physiology - Category: Biochemistry Source Type: research
Publication date: Available online 16 August 2019Source: MicronAuthor(s): Lilian Mirian Oliveira de Morais, Eduardo Inocente Jussiani, João Antonio Cyrino Zequi, Paulo José dos Reis, Avacir Casanova AndrelloAbstractAedes aegypti and Aedes albopictus are vectors of several arboviruses responsible for causing dengue, chikungunya, Zika, and yellow fever viruses and microcephaly, resulting in a public health problem in several countries worldwide. Even in this scenario, studies on the morphology of mosquito eggs are still lacking. In this paper, X-ray microtomography was used to study mosquito egg morphology. Sev...
Source: Micron - Category: Biology Source Type: research
Discussion Dengue is an important arboviral infection that affects about 40% of the world population. It is found mainly in topical and subtropical areas of the world mainly in developing countries but it range is spreading including the United States. A review of common arboviruses can be found here. It is a flaviavirus with 4 distinct serotypes named DENV-1 through DENV-4 and is spread by A. aegypti a day biting mosquito. Infection with one serotype confers immunity to that serotype but not the others. It does offer some protection for cross-infection but this only lasts a few months. Incubation period is 3-14 days with ...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
Date: August 26, 2019 Issue #:  1579Summary:  Use of insect repellents is strongly recommended by the Centers for Disease Control and Prevention (CDC) and the Environmental Protection Agency (EPA) to prevent infections transmitted by mosquitoes and ticks. Insect repellents applied to exposed skin should be used in conjunction with other preventive measures such as wearing pants and long-sleeved shirts, and avoiding outdoor activities during peak mosquito-biting times. Mosquitoes can transmit Zika, chikungunya, dengue, West Nile, eastern equine encephalitis, and yellow fever viruses, as well as...
Source: The Medical Letter - Category: Drugs & Pharmacology Authors: Source Type: research
The present study shows that the most prominent human arboviruses worldwide (dengue viruses 1, 2, 3, and 4, Chikungunya virus, and Zika virus) can infect wild animals and jump from urban to sylvatic maintenance cycles in South America, as did the yellow fever virus in the past. All these viruses are transmitted by the anthropophilic mosquito Aedes aegypti and cause epidemics throughout Brazil. The yellow fever virus is the oldest example of an urban arbovirus that became sylvatic in South America. Currently, the disease is a zoonosis of non-human primates that moves like a wave through forests of the Brazilian countryside,...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
Authors: Kim YH, Kim TY, Park JS, Park JS, Lee J, Moon J, Chong CK, Junior IN, Ferry FR, Ahn HJ, Bhatt L, Nam HW Abstract A rapid diagnostic test (RDT) kit was developed to detect non-structural protein 1 (NS1) of yellow fever virus (YFV) using monoclonal antibody. NS1 protein was purified from the cultured YFV and used to immunize mice. Monoclonal antibody to NS1 was selected and conjugated with colloidal gold to produce the YFV NS1 RDT kit. The YFV RDTs were evaluated for sensitivity and specificity using positive and negative samples of monkeys from Brazil and negative human blood samples from Korea. Among monoc...
Source: Korean Journal of Parasitology - Category: Parasitology Tags: Korean J Parasitol Source Type: research
Failloux Although the role of exogenous small interfering RNA (siRNA) and P-element induced wimpy testis (PIWI)-interacting RNA (piRNA) pathways in mosquito antiviral immunity is increasingly better understood, there is still little knowledge regarding the role of mosquito cellular microRNA (miRNA). Identifying direct interactions between the mosquito miRNAs and the RNA genome of arboviruses and choosing the relevant miRNA candidates to explore resulting antiviral mechanisms are critical. Here, we carried out genomic analyses to identify Aedes aegypti miRNAs that potentially interact with various lineages and genotyp...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
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