West Nile Virus

One test for all infections

If you're returning from abroad with a fever, your doctor will likely test you for malaria. You'll give multiple blood samples at the lab, and if the results are inconclusive, you'll face yet another round of tests.

Apr 20, 2015
popularity 11 comments 0

What is West Nile Virus?

Late summer brings excitement about college football and hopes that the weather will soon cool off, but it also brings a risk for West Nile Virus, a common infection, but one that is not frequently diagnosed.

Sep 09, 2014
popularity 0 comments 0

West Nile virus (WNV) is a virus of the family Flaviviridae. Part of the Japanese encephalitis (JE) antigenic complex of viruses, it is found in both tropical and temperate regions. It mainly infects birds, but is known to infect humans, horses, dogs, cats, bats, chipmunks, skunks, squirrels, domestic rabbits, crows, robins, crocodiles and alligators. The main route of human infection is through the bite of an infected mosquito. Approximately 90% of West Nile Virus infections in humans are without any symptoms.

Image reconstructions and cryoelectron microscopy reveal a 45–50 nm virion covered with a relatively smooth protein surface. This structure is similar to the dengue fever virus; both belong to the genus Flavivirus within the family Flaviviridae. The genetic material of WNV is a positive-sense, single strand of RNA, which is between 11,000 and 12,000 nucleotides long; these genes encode seven non-structural proteins and three structural proteins. The RNA strand is held within a nucleocapsid formed from 12 kDa protein blocks; the capsid is contained within a host-derived membrane altered by two viral glycoproteins.

This text uses material from Wikipedia licensed under CC BY-SA

Latest Spotlight News

Finding the body clock's molecular reset button

An international team of scientists has discovered what amounts to a molecular reset button for our internal body clock. Their findings reveal a potential target to treat a range of disorders, from sleep ...

Researchers bring order to big data of human biology

A multi-year study led by researchers from the Simons Center for Data Analysis (SCDA) and major universities and medical schools has broken substantial new ground, establishing how genes work together within ...

New breast cancer gene identified

A new breast cancer gene has been identified in a study led by Women's College Hospital (WCH) researcher Dr. Mohammad Akbari, who is also an assistant professor with the Dalla Lana School of Public Health ...

Hate to diet? It's how we are wired

If you're finding it difficult to stick to a weight-loss diet, scientists at the Howard Hughes Medical Institute's Janelia Research Campus say you can likely blame hunger-sensitive cells in your brain known ...

A 'GPS' to navigate the brain's neuronal networks

In new research published today by Nature Methods, scientists from the Hebrew University of Jerusalem and Harvard University have announced a "Neuronal Positioning System" (NPS) that maps the circuitry of the ...

Neurons constantly rewrite their DNA

Johns Hopkins scientists have discovered that neurons are risk takers: They use minor "DNA surgeries" to toggle their activity levels all day, every day. Since these activity levels are important in learning, ...