Combating mosquito-borne diseases with bacteria

(Penn State) Viruses, spread through mosquito bites, cause human illnesses such as dengue fever, Zika and yellow fever. A new control technique harnesses a naturally occurring bacterium called Wolbachia that blocks replication of viruses and breaks the cycle of mosquito-borne disease, according to an international team of researchers.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news

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Conclusions and significanceAlthough IRM should be a fixture of all vector control programs, it is currently often absent from the strategic plans to control mosquito-borne diseases, especially arboviruses. Experiences from other public health disease vectors and agricultural pests underscore the need for urgent action in implementing IRM for invasiveAedes mosquitoes. Based on a plan developed for malaria vectors, here we propose some key activities to establish a global plan for IRM inAedes spp.
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
by Andrew J. Monaghan, Rebecca J. Eisen, Lars Eisen, Janet McAllister, Harry M. Savage, John-Paul Mutebi, Michael A. JohanssonAedes (Stegomyia) aegypti (L.) andAe.(Stegomyia) albopictus (Skuse) mosquitoes can transmit dengue, chikungunya, yellow fever, and Zika viruses. Limited surveillance has led to uncertainty regarding the geographic ranges of these vectors globally, and particularly in regions at the present-day margins of habitat suitability such as the contiguous United States. Empirical habitat suitability models based on environmental conditions can augment surveillance gaps to describe the estimated potential spe...
Source: PLoS Computational Biology - Category: Biology Authors: Source Type: research
by Elliott F. Miot, Fabien Aubry, St éphanie Dabo, Ian H. Mendenhall, Sébastien Marcombe, Cheong H. Tan, Lee C. Ng, Anna-Bella Failloux, Julien Pompon, Paul T. Brey, Louis Lambrechts The case-fatality rate of yellow fever virus (YFV) is one of the highest among arthropod-borne viruses (arboviruses). Although historically, the Asia-Pacific region has remained free of YFV, the risk of introduction has never been higher due to the increasing influx of people from endemic regions and the recent outbreaks in Africa and South America. Singapore is a global hub for trade and tourism and therefore at high risk for Y...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
Arboviruses infecting people primarily exist in urban transmission cycles involving urban mosquitoes in densely populated tropical regions. For dengue, chikungunya, Zika and yellow fever viruses, sylvatic (for...
Source: Parasites and Vectors - Category: Microbiology Authors: Tags: Review Source Type: research
ConclusionThe low-cost mass-rearing prototype cage can be recommended to produceAe.aegypti in the context of rear and release techniques. The proposed adult-index can be used as a quick proxy of mosquito survival rates in mass-rearing settings.
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
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
Health officials say they discovered Aedes aegypti mosquitoes - known to carry Zika virus and dengue - in York County, Nebraska, on Tuesday . It's the first time they've been seen in the state.
Source: the Mail online | Health - Category: Consumer Health News Source Type: news
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
In recent years, public health threats due to Zika virus (ZIKV) and Ebola virus have increased awareness among the ophthalmic community regarding the visual effect of ocular sequelae identified in association with these emerging infectious diseases. Yellow fever virus (YFV), deemed the “original viral hemorrhagic fever,” resides in the Flavivirus family, which includes other mosquito-borne illnesses, including Dengue (DENV), West Nile (WNV), and ZIKV. Forty-seven countries in Africa (34 [72.3%]) and Central and South America (13 [27.7%]) are endemic for, or have regions endemi c for, YFV, underscoring its globa...
Source: JAMA Ophthalmology - Category: Opthalmology Source Type: research
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