Bird flu mutating, risk to humans no bigger: WHO
Mon Feb 20, 2006 6:21 PM GMT11, By Richard Waddington
GENEVA (Reuters) - Mutations in the H5N1 bird flu virus are seemingly making it more deadly in chickens and more resistant in the environment but without yet increasing the threat to humans, the World Health Organization said on Monday.
The changes, which all viruses undergo, have affected patterns of transmission amongst domestic poultry and wild birds, with ducks, for example, developing the ability to pass the virus on without getting ill.
"They have not, however, had any discernible impact on the disease in humans, including its modes of transmission," the United Nations' health agency said in a statement posted on its Web site (www.who.int).
Mon Feb 20, 2006 6:21 PM GMT11, By Richard Waddington
GENEVA (Reuters) - Mutations in the H5N1 bird flu virus are seemingly making it more deadly in chickens and more resistant in the environment but without yet increasing the threat to humans, the World Health Organization said on Monday.
The changes, which all viruses undergo, have affected patterns of transmission amongst domestic poultry and wild birds, with ducks, for example, developing the ability to pass the virus on without getting ill.
"They have not, however, had any discernible impact on the disease in humans, including its modes of transmission," the United Nations' health agency said in a statement posted on its Web site (www.who.int).
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