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Science/Tech
See other Science/Tech Articles

Title: Avian Flu Moves Among Wild Geese
Source: rense.com
URL Source: http://www.rense.com/general66/avian.htm
Published: Jul 9, 2005
Author: BBC News
Post Date: 2005-07-09 00:16:40 by Coral Snake
Keywords: Moves Among, Avian, Geese
Views: 58
Comments: 6

Avian Flu Moves Among Wild Geese BBC News 7-7-5

An outbreak of avian flu in wild geese in western China has raised fears that the virus responsible could soon spread beyond its Asian stronghold.

Researchers say evidence of the H5N1 pathogen in the geese is a big concern because of the migratory animals' ability to fly huge distances.

Their reports, in the Science and Nature journals, are the first to show viral transmission between wild birds.

Previously, the flu was only seen to move to wild birds from domestic fowl.

World health officials are worried avian influenza virus (AVI) could cause a pandemic of human disease if it ever acquires the ability to pass easily from human to human.

So far, the impact on people has been limited to 54 deaths out of 154 infections in Vietnam, Thailand and Cambodia - again, after contact with domesticated chickens and other infected food birds.

News that the H5N1 viral strain is now being passed around wild geese makes avian flu even more of a global threat than it already is, the scientists say.

"These birds can fly one thousand miles a day at maximum," explained Yi Guan, of the University of Hong Kong, China.

"This means the virus has the opportunity to expand its distribution to currently virus-free areas," he told BBC News.

Global threat

The reported outbreak was first detected on 30 April in bar-headed geese ( Anser indicus ) at Lake Qinghai, a protected nature reserve in Qinghai Province.

The animals displayed classic symptoms, such as tremors, diarrhoea, head tilt and paralysis.

By 20 May, the outbreak had claimed some 1,500 birds, report Yi Guan and colleagues in Nature; not just bar-headed geese, but great black-headed gulls ( Larus ichthyaetus ) and brown-headed gulls ( Larus brunnicephalus ).

Genetic analysis of the virus extracted from dead birds shows that it is closely related to the strain that has caused human illness in Thailand and Vietnam.

Lake Qinghai is a major breeding centre for migrant birds, say to Jinhua Liu and colleagues in Science magazine. Bar-headed geese are known to move south to Burma and north over the Himalayas to India.

In their report, Liu's team analysed a variety of birds collected from the lake. The scientists managed to isolate four H5N1 virus sub-strains, and tests on mice and chickens showed them to be highly virulent.

Fifteen of the 16 test animals were dead within three days of exposure.

"The occurrence of highly pathogenic H5N1 AIV infection in migrant waterfowl indicates that this virus has the potential to be a global threat," Liu's team write in Science.

Evidence of spread in wild geese means farmers outside of southeast Asia should now be more vigilant for signs of the disease, the research teams say. Avian flu is almost impossible to stamp out once it becomes established in farm poultry populations, they warn.

H5N1 BIRD FLU VIRUS * Principally an avian disease, first seen in humans in Hong Kong, 1997 * Almost all human cases thought to be contracted from birds * Isolated cases of human-to-human transmission in Hong Kong and Vietnam, but none confirmed

© BBC MMV

http://news.bbc.co.uk/2/hi/science/nature/4657145.stm

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#1. To: Coral Snake (#0)

What if Limbaugh got all the bots chanting that Avian Flu was just junk science. Would this make the problem go away? This tactic apperently solved the global warming problem.

crack monkey  posted on  2005-07-09   0:23:57 ET  Reply   Trace   Private Reply  


#2. To: All (#0)

"Bird Flu" os an artificial disease, a Depopulation scheme of the Illuminati, the next act of "terror" and an act of war against the American people by the Illuminati. It should be TREATED AS SUCH if it comes to America.

Elapidae, Micrurus fulvius

Coral Snake  posted on  2005-07-09   0:23:59 ET  Reply   Trace   Private Reply  


#3. To: Coral Snake, Zipporah, Mr Nuke Buzzcut, robin (#0)

"These birds can fly one thousand miles a day at maximum," explained Yi Guan, of the University of Hong Kong, China.

No way!!!

Diana  posted on  2005-07-09   0:41:53 ET  Reply   Trace   Private Reply  


#4. To: Diana (#3)

I think they fly that much in a season (south for the winter migration), but not in a single day!

The means of defense against foreign danger historically have become the instruments of tyranny at home. – James Madison

robin  posted on  2005-07-09   0:46:58 ET  Reply   Trace   Private Reply  


#5. To: Diana (#3)

No way!!!

Yeah,that's B.S.

That would mean flying at almost 42mph for 24 hours straight without stopping.

Here's the problem...people will believe Guan simply because he's from the University of Hong Kong.

Grumble Jones  posted on  2005-07-09   7:59:00 ET  Reply   Trace   Private Reply  


#6. To: Grumble Jones, robin, Diana (#5)

Migration of Birds

Flight Speed and Rate of Migration

"Truth is so obscure in these times, and falsehood so established, that, unless we love the truth, we cannot know it."
~~Blaise Pascal (French Mathematician, Philosopher and Physicist, 1623-1662)

Mr Nuke Buzzcut  posted on  2005-07-09   14:33:09 ET  Reply   Trace   Private Reply  


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