WHO Director-General Dr. Margaret Chan said at a press briefing 
Thursday that "the scientific criteria for an influenza pandemic have been 
met," and that she was raising the alert level from 5 to 6 — the highest level 
(denoting widespread community transmission on two continents). 
"We do not expect to see a sudden and dramatic jump in the number 
of severe or fatal infections," she said, but she also warned that "the virus
writes the rules."
--
Dr Marwah
 
 

 
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