No specific treatment exists for a serious mosquito-borne disease that is sweeping into new parts of the globe. Nor are there any vaccines to prevent infection in the first place.
Dengue is caused by any one of four viruses transmitted by Aedes mosquitoes. These mosquitoes were originally found in tropical and sub-tropical regions, but now exist on all continents except Antarctica. They have caused outbreaks of dengue in the southern United States, and been seen as far north as New York and Chicago.
While dengue exists in both rural and urban areas, city dwellers are most at risk. The mosquito disease-carriers reproduce in standing water, which is common wherever people store water at home for drinking and bathing purposes. The rapid growth of cities in tropical countries has led to overcrowding, allowing more dengue-carrying mosquitoes to live closer to more people.Because of poor knowledge about dengue transmission and lax regulations, construction sites in the booming cities offer ideal breeding grounds. Uncollected garbage also poses a danger, as discarded plastic packaging, tires, and other containers allow water to accumulate and remain stagnant for days. And if there’s no water for hatching, mosquito eggs can survive in dry conditions for more than year.
All these factors are at play in the major cities of Bangladesh. The capital, Dhaka, with a population of 17 million, has experienced repeated devastating outbreaks of the severe form of dengue in recent years. But poor public health infrastructure and a lack of resources mean this poor, rapidly growing city lacks even basic knowledge about how much dengue there is, what strains are circulating, and where and when the infected mosquitoes are to be found.
By building the capacity of local researchers and government institutions to understand and respond to dengue, and by strengthening international collaboration, the research will not only reduce suffering in the short term, but limit opportunities for new diseases to emerge.Canadians well understand the potential threat these diseases pose, having dealt with invasions by Severe Acute Respiratory Syndrome and West Nile Virus in the recent past. The more Canada can do to assist developing countries control diseases such as dengue, the better for them and for us.
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18.05.2015 | National Science Foundation
Soft-tissue engineering for hard-working cartilage
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Physicists have developed an innovative method that could enable the efficient use of nanocomponents in electronic circuits. To achieve this, they have developed a layout in which a nanocomponent is connected to two electrical conductors, which uncouple the electrical signal in a highly efficient manner. The scientists at the Department of Physics and the Swiss Nanoscience Institute at the University of Basel have published their results in the scientific journal “Nature Communications” together with their colleagues from ETH Zurich.
Electronic components are becoming smaller and smaller. Components measuring just a few nanometers – the size of around ten atoms – are already being produced...
Development and implementation of an advanced automobile parking navigation platform for parking services
To fulfill the requirements of the industry, PolyU researchers developed the Advanced Automobile Parking Navigation Platform, which includes smart devices,...
The world's first electrical car and passenger ferry powered by batteries has entered service in Norway. The ferry only uses 150 kWh per route, which...
On Tuesday, 19 May 2015 the research icebreaker Polarstern will leave its home port in Bremerhaven, setting a course for the Arctic. Led by Dr Ilka Peeken from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) a team of 53 researchers from 11 countries will investigate the effects of climate change in the Arctic, from the surface ice floes down to the seafloor.
RV Polarstern will enter the sea-ice zone north of Spitsbergen. Covering two shallow regions on their way to deeper waters, the scientists on board will focus...
Nanoengineers at the University of California, San Diego developed a gel filled with toxin-absorbing nanosponges that could lead to an effective treatment for skin and wound infections caused by MRSA (methicillin-resistant Staphylococcus aureus), an antibiotic-resistant bacteria. This "nanosponge-hydrogel" minimized the growth of skin lesions on mice infected with MRSA - without the use of antibiotics. The researchers recently published their findings online in Advanced Materials.
To make the nanosponge-hydrogel, the team mixed nanosponges, which are nanoparticles that absorb dangerous toxins produced by MRSA, E. coli and other...
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22.05.2015 | Materials Sciences