Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


West Nile Virus cases analyzed for prevalence and symptoms


Researchers from Chicago have identified focal neurological deficits as a major group of presenting symptoms among patients with West Nile Virus infection, which became epidemic in the United States in 2002. Focal neurological deficits included visual loss, muscle weakness, paralysis of one half of the body, abnormally slow movement, tremor with rigidity, numbness or tingling and unstable gait. Findings of their study are being presented at the American Academy of Neurology Annual Meeting in Honolulu, March 29-April 5, 2003.

West Nile Fever, generally transmitted to humans through the bite of an infected mosquito, is usually a relatively mild infection. It is estimated that about 20 percent of those infected will develop West Nile Fever, characterized by mild, flu-like symptoms, a skin rash on the trunk of the body and swollen lymph nodes. West Nile fever typically lasts only a few days and does not appear to cause any long-term health effects.

The more severe form of the disease is the West Nile encephalitis or meningitis, characterized by high fevers, headache, stiff neck, disorientation, seizures, coma and focal neurological deficits. The death rate among West Nile virus infection cases from the summer of 2002 was 5 to 6 percent according to the latest Center for Disease Control reports.

Illinois experienced a higher incidence of West Nile Virus infection cases than any other state: 836, or 20 percent of all U.S. cases reported by January 2003. To aid in diagnosis and treatment, researchers from three Chicago area medical centers were interested to know more about presenting symptoms. Detailed analysis of 28 cases from three hospitals between the months of August through October of 2002, revealed that more than half (54 percent) of their patients exhibited a neurological symptom that mimicked other neurological diseases such as stroke, Parkinson’s, Bells’ palsy, polio and Guillain-Barre syndrome. The remainder of their cases presented with a meningitis or encephalitis without any focal symptoms. "As West Nile virus cases continue to be seen across the U.S., we hope neurologists and patients benefit from the findings of our study by being aware of the varied presentations of the West Nile virus," concluded study author Nidhi K. Watson, MD of Rush Medical Center, Chicago, Ill.

The American Academy of Neurology, an association of more than 18,000 neurologists and neuroscience professionals, is dedicated to improving patient care through education and research. For more information about the American Academy of Neurology, visit its online press room at

For more information contact:
Kathy Stone, 651-695-2763,
March 29-April 5, 808-792-6630
Marilee Reu, 651-695-2789,

Marilee Reu | EurekAlert!
Further information:

More articles from Health and Medicine:

nachricht NIH scientists describe potential antibody treatment for multidrug-resistant K. pneumoniae
14.03.2018 | NIH/National Institute of Allergy and Infectious Diseases

nachricht Researchers identify key step in viral replication
13.03.2018 | University of Pittsburgh Schools of the Health Sciences

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

Im Focus: Surveying the Arctic: Tracking down carbon particles

Researchers embark on aerial campaign over Northeast Greenland

On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...

Im Focus: Unique Insights into the Antarctic Ice Shelf System

Data collected on ocean-ice interactions in the little-researched regions of the far south

The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...

Im Focus: ILA 2018: Laser alternative to hexavalent chromium coating

At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.

When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...

Im Focus: Radar for navigation support from autonomous flying drones

At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.

Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

International Virtual Reality Conference “IEEE VR 2018” comes to Reutlingen, Germany

08.03.2018 | Event News

Latest News

Wandering greenhouse gas

16.03.2018 | Earth Sciences

'Frequency combs' ID chemicals within the mid-infrared spectral region

16.03.2018 | Physics and Astronomy

Biologists unravel another mystery of what makes DNA go 'loopy'

16.03.2018 | Life Sciences

Science & Research
Overview of more VideoLinks >>>