Research Shows Bird Flu Could Threaten Humans Worldwide; Scientists Say It Is Only a Matter of Time Before the Virus Spreads Among People

Summary

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WASHINGTON (AP) - A strain of bird flu that scientists fear could lead to a worldwide pandemic in humans is becoming more infectious to mammals.

Millions of chickens and other fowl have had to be slaughtered in Asia - and thousands more have been killed in the United States and elsewhere - to stem outbreaks of avian flu in recent years. Scientists say it is only a matter of time before the virus adapts to spread among humans.

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Research Shows Bird Flu Could Threaten Humans Worldwide; Scientists Say It Is Only a Matter of Time Before the Virus Spreads Among People

The flu already passed from birds to humans in Hong Kong in 1997, killing six of 18 infected pe...

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