Tag: "dengue" at biology news
Proteins show promise for mosquito control
...notorious for spreading not only malaria, but also dengue
fever (so painful it's commonly called "break bone fever"), several forms of encephalitis, yellow fever, and West Nile virus. And the numbers are increasing. The World Health Organization estimates that there are 300 million cases of mosquito-borne d...
Essential smell gene may provide key to new insect repellents
...ior. "Insects are the primary vectors for malaria, dengue
fever, yellow fever, and West Nile encephalitis, and they locate human hosts largely through their exquisitely sensitive olfactory systems." "We need better insect repellents to use as weapons against the spread of infectious disease," Vosshall adds...
Insecticide resistance: A constraint on evolutionary change
...s Aedes aegytpi , the vector for yellow fever and dengue
fever, has never developed high levels of resistance. The new study reveals the reason for this striking discrepancy in adaptation. First, the researchers determined that the G119S version of the Ae. aegypti AchE1 protein was indeed resistant ...
Mosquito researchers track dengue fever in Sonora, Mexico
...nora to learn more about the mosquitoes that carry dengue
and West Nile viruses and about the disease-causing organisms. The reported number of dengue
fever cases in Sonora has been increasing in the last several years, and the disease appears to be m...
As humans alter land, infectious diseases follow
...ectious diseases, including scourges like malaria, dengue
fever, Lyme disease, yellow fever, cholera, influenza, foot and mouth, and hemorrhagic fevers. "Evidence is mounting that deforestation and ecosystem changes have implications for the distribution of many other microorganisms, and the health of human...
Computer modeling targets epidemics, bioterror
...quarantine. They will initially focus on smallpox, dengue
fever and West Nile virus, then will apply their model to study other infectious agents. (Donald Burke, M.D., principal investigator) A group of scientists at Los Alamos National Laboratory. This research group will explore the effects of social...
A&M researcher studying genes of mosquitoes
...quito species, Aedes aegypti, the carrier for both dengue
and yellow fever, hoping to keep deadly mosquito-b...no vaccine." The first reported epidemics of dengue
fever occurred in the late-1700s in Asia, Africa and North America. South Texas experienced its larg...
'Male-targeting' bacterium's genome is deciphered
...ld prevent them from transmitting diseases such as dengue
fever to humans. Scientists say the Wolbachia genome data will greatly accelerate progress in both understanding how Wolbachia causes cytoplasmic incompatibility and how it might best be used to develop new disease-control strategies for diseases suc...
Thailand dengue hemorrhagic fever epidemics spread in waves emanating from Bangkok
...Hopkins Bloomberg School of Public Health studying dengue
hemorrhagic fever epidemics in Thailand have deter...aves and sound waves to study "epidemic waves" of dengue
cases. Our study is the first step to understanding the mechanism of how a disease like dengue
Transgenic mosquitoes are less fertile than their counterparts in nature
...ng mosquitoes and reduce the incidence of malaria, dengue
fever, and other mosquito-borne maladies," Atkinson said....
Purdue team solves structure of West Nile virus
...l family that causes diseases including West Nile, dengue
and yellow fever. The group, which is composed of researchers from Kuhn's lab, as well as the labs of Michael Rossmann and Timothy Baker, has described the structure of other flaviviruses before (see related articles below). While this is the first t...
Tips from the Journals of the American Society for Microbiology
... 5 to differentiate west nile virus infection from dengue
and st. louis encephalitis virus infections and from flavavirus vaccination. Journal of Clinical Microbiology, 41. 9: 4217-4223.)...
Purdue biologists receive nearly $18 million to study infectious diseases
...reer to exploring the structure of such viruses as dengue
and sindbis. "These NIH funds mean we will now be able to establish a new type of laboratory and employ robotic analysis equipment that can produce about 100 proteins simultaneously. The grant is a significant investment in structural virology at Pur...
New guidelines can help health officials better predict and control dengue epidemics
...des aegypti, the mosquito responsible for epidemic dengue
transmission. Efforts to avoid large-scale epidemi...d the expected reduction in the number of reported dengue
cases. At the same time, the guidelines provide insight into the value of having an early warning sy...
Dengue infection more serious for elderly persons
Older people who become infected with the dengue
virus are more likely to need hospitalization, are...study that analyzed the clinical manifestations of dengue
infection among persons 65 and older. The findings are described in an English-language article in ...
Study traces global spread of virulent dengue virus to US doorstep
...bes the emergence and spread of a virulent form of dengue
virus from the Indian subcontinent to Latin Americ...rus associated with severe disease. The particular dengue
virus subtype has been responsible for epidemics of dengue
hemorrhagic fever in Sri Lanka, East Afri...
First-ever images of developing dengue virus obtained at Purdue
...hard Kuhn has solved the structure of the immature dengue
virus, which is related to West Nile virus and yel...ually. The pair solved the structure of the mature dengue
virus particle last year (see related story), and Rossmann said the new findings were a significant ...
Researchers model evolution of influenza virus
...h influenza from other RNA viruses such as HIV and dengue
fever, which exist in a wide range of variants, he said. "Given basic evolutionary theory, one might expect navely that new influenza strains wouldn't necessarily drive the others extinct, and the virus population would get more and more diverse," he...
First population study of GM mosquitoes highlights difficulties facing malaria control technique
...o fight diseases such as malaria, yellow fever and dengue
and play an important part in developing future strategies to banish these major scourges afflicting humanity. "While more work is needed on the molecular genetics of this problem, an increasingly important challenge is to study the population biolog...
Deciphering the genetic basis of the mosquitos senses
... the incidence of malaria, West Nile encephalitis, dengue
and yellow fevers and other mosquito-born diseases," Zwiebel says. This goal appears to be achievable because the mosquito's olfactory system is substantially simpler than that of mammals. Humans have about 800 types of olfactory receptors while mice...