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Tag: "dengue" at biology news

Finding Cures For Tropical Diseases: Is Open Source An Answer?

...cal diseases, such asAfrican sleeping sickness and dengue fever. While patent incentiveshave driven commercial pharmaceutical companies to make Western healthcare the envy of the world, the commercial model only works ifcompanies can sell enough patented products to cover their R&Dcosts and produce prof...

Spider Venom Could Yield Eco-Friendly Insecticides

...sease and Rocky Mountain spotted fever (ticks) and dengue and yellow fever (mosquitoes). "One could envision specifically targeting mosquito larvae that carry human diseases such as West Nile or malaria, while leaving other insects and vertebrates unharmed," says King. ...

FDA Warns Consumers Not to Use Home-Use Diagnostic Kits Marketed by Globus Media

...use test kits intended for diagnosing syphilis and dengue fever are approved for sale in the U.S. The FDA has issued an import alert which alerts FDA field personnel to the possible importation of the Globus Media devices, provides guidance as to their detention and refusal of admission into the U.S., and ...

WHO Warns Of Increased Risk Of Vector-borne Diseases In Tsunami-affected Areas

... risk of vector-borne diseases such as malaria and dengue fever across tsunami-affected areas in Southeast A...t affected countries in the region are endemic for dengue fever and malaria except the Maldives, which has no malaria cases but does have dengue cases. With t...

NIAID begins clinical trial of West Nile virus vaccine

...a vaccine developed by Acambis, Cambridge, MA, and dengue virus in the case of a vaccine developed by NIAID intramural researchers. ...

Fragment of yellow fever virus may hold key to safer vaccine

...fever virus--and its flavivirus cousins, including dengue and West Nile –look like balls covered by approximately 100 cross-hatched pairs of envelope proteins lying on the surface. The prongs of Y-shaped antibodies against yellow fever likely span the pairs by grabbing the essential epitope on one and the s...

Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses

...ruses include West Nile virus, yellow fever virus, dengue virus and Japanese encephalitis virus; the less-familiar tick-borne flaviviruses are just as serious, causing tick-borne encephalitis or hemorrhagic fevers. Currently, a Japanese encephalitis outbreak is raging in India and Nepal and has killed more ...

Secrets to antibody's success against West Nile Virus surprise scientists

...may advance vaccines for related viruses including dengue fever. A monoclonal antibody that can effectively ... serious complications or death. Like West Nile, dengue virus is a flavivirus spread by mosquito bites, but only in tropical regions of the world. The dengu...

Mosquito study shows new, faster way West Nile can spread

...possibly other viruses such as the one that causes dengue fever. According to that theory, many vertebrates were considered to be "dead-end hosts" that did not pass along the virus. Only birds, which develop much higher levels of the West Nile virus in their blood, were thought capable of passing it on to u...

Fighting malaria by manipulating mosquitoes' sense of smell

...ase-carrying mosquitoes, such as those that spread dengue fever and those that carry the West Nile virus. In addition the project will test a basic approach that could be directed against a number of other insect species, including agricultural pests and those that carry other human and animal diseases. Th...

Computer models aid understanding of antibody-dependent enhancement in spread of dengue fever

...lieve antibody-dependent enhancement may allow the dengue virus to grow more rapidly in people who were prev...ade-off between advantage and disadvantage for the dengue virus. The findings could one day lead to new strategies for developing and deploying vaccines. Usi...

Biologists visualize protein interaction that may initiate viral infection

... on a cell's surface just after it attached to the dengue virus, a linkup thought to initiate the early stag...ons. During the earliest stages of infection, the dengue virus attaches to the "carbohydrate recognition domain," or CRD, of a key binding protein called DC-...

Genetically engineered mosquitoes show resistance to dengue fever virus

...l of resistance against the most prevalent type of dengue fever virus, providing a powerful weapon against a...rst stable transgenic mosquito resistant to Type 2 dengue fever virus, the most prevalent strain of the disease. The mosquitoes that survived the procedure al...

UGA study explains peaks and troughs of dengue epidemics

Scientists have long known that epidemics of dengue fever wax and wane over a period of several years,...f the four viral strains, or serotypes, that cause dengue explains the timing of epidemics. "We found that since about the mid 1980s, there's been a sequent...

Genome of yellow fever/dengue fever mosquito sequenced

...strategies to prevent and control yellow fever and dengue fever has become more possible with the completion of the first draft of the genome sequence of Aedes aegypti mosquito by scientists led by Vishvanath Nene at The Institute for Genomic Research (TIGR) and David Severson at the University of Notre Dam...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

... the transmission of viruses that cause yellow and dengue fevers – diseases that infect over 50 million peop...s could explain why one type of mosquito transmits dengue and yellow fevers, while the other transmits malaria. Beyond the present descriptive work, functiona...

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