| The chief of the World
Health Organization says it is only a matter of time before avian flu
infections in birds trigger a global pandemic of human influenza. WHO
Director General Lee Jong-wook told a gathering of health experts in
Geneva that, so far, a human pandemic has not begun -- but there are
signs it is coming.
Officials say such a pandemic could kill millions of people and cost
the global economy an estimated 800 billion dollars.
For now, bird to human flu transmissions are rare. Most of the some
120 reported H5N1 human flu victims in Asia had direct contact with
infected birds, their feces or nasal secretions.
But health officials worry that as the virus spreads in birds, it increases
the chance it could mutate into a form that passes easily among humans,
killing millions.
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