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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Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy