Navigation Links
Key Viral Change Could Help Bird Flu Spread
Date:10/4/2007

An altered protein would let it thrive in upper airway, scientists say

THURSDAY, Oct. 4 (HealthDay News) -- U.S. scientists say they've spotted a crucial step the deadly H5N1 bird flu virus must take in order to spread easily in humans.

Since H5N1 first appeared in 1997, there have been more than 250 human infections. Of those, 150 were fatal. Most of the human infections were the result of close contact with infected birds. So far, the virus has not developed the ability to spread easily among humans.

Now, researchers led by University of Wisconsin-Madison virologist Yoshihiro Kawaoka have pinpointed a single change in a viral protein that helps H5N1 infect the cells of the upper respiratory system in mammals. The adaptation could enable the virus to infect a wider range of cell types and spread more easily among humans, the scientists said.

Being able to establish itself in the upper respiratory system enables easy transmission of the virus through coughing and sneezing, Kawaoka noted. However, other yet-to-be identified changes would have to occur before the H5N1 virus could potentially trigger a flu pandemic.

The finding appears in the journal PLoS Pathogens.

"The viruses that are in circulation now are much more mammalian-like than the ones circulating in 1997," Kawoka said in a prepared statement. "The viruses that are circulating in Africa and Europe are the ones closest to becoming a human virus."

More information

The U.S. Centers for Disease Control and Prevention has more about bird flu.



-- Robert Preidt



SOURCE: University of Wisconsin-Madison, news release, Oct. 4, 2007


'/>"/>
Copyright©2007 ScoutNews,LLC.
All rights reserved

Page: 1

Related medicine news :

1. Roche Commits More Antiviral Pills To Asia For Bird Flu
2. FDA panel refuses anti-viral cold remedy
3. New oral antiviral treatment of cold sores approved
4. Viral encephalitis can cause more damage than already known
5. Gene-Nanoparticle Gene Transfer Is Better Than Viral Vector Transfer System
6. Therapeutic Genes Transferred By Viral Vector Through T Cell Masking
7. Increased demand for Bird flu anti-viral drug world wide
8. Mysterious viral outbreak in Toronto, influenza ruled out
9. HIV Mortality declining in India due to Generic Antiretroviral therapy drugs
10. Catechins in green tea show antiviral effect on influenza virus
11. CMSI produces Low cost Anti-retroviral drugs in India
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... June 27, 2016 , ... TherapySites, ... today its affiliation with Tennessee Counseling Association. This new relationship allows ... the Tennessee Counseling Association, adding exclusive benefits and promotional offers. , "TCA is ...
(Date:6/26/2016)... ... June 27, 2016 , ... Quality metrics are proliferating in cancer care, ... remain in the eye of the beholder, according to experts who offered insights and ... Journal of Managed Care. For the full issue, click here . , For ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified ... be personalized through a fitness app. The fitness app plans to fix the two major ... only offer a one size fits all type program , They don’t eliminate ...
(Date:6/25/2016)... (PRWEB) , ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library ... City Observer , brings up a new, often overlooked aspect of head lice: the parasite’s ... for fumigation is not a common occurrence, but a necessary one in the event that ...
(Date:6/25/2016)... ... 25, 2016 , ... Dr. Calvin Johnson has dedicated his ... implemented orthobiologic procedures as a method for treating his patients. The procedure is ... to perform the treatment. Orthobiologics are substances that orthopaedic surgeons use to help ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... DUBLIN , June 24, 2016 ... "The World Market for Companion Diagnostic Tests" report to ... World Market for Companion Diagnostics The World ... diagnostic and personalized medicine diagnostics. Market analysis in the report ... Diagnostics Test Market (In Vitro Diagnostic Kits) by Region (N. ...
(Date:6/24/2016)... , June 24, 2016  Arkis BioSciences, a ... invasive and more durable cerebrospinal fluid treatments, today ... The Series-A funding is led by Innova Memphis, ... and other private investors.  Arkis, new financing will ... and the market release of its in-licensed Endexo® ...
(Date:6/23/2016)... -- Research and Markets has announced the ... (Organic Chemical (Sugar, Petrochemical, Glycerin), Inorganic Chemical), Functionality (Filler, ... Global Forecast to 2021" report to their offering. ... pharmaceutical excipients market is projected to reach USD 8.1 ... the forecast period 2016 to 2021. ...
Breaking Medicine Technology: