The United Nations warned of a possible major resurgence of bird flu and said a mutant strain of the H5N1 virus was spreading in Asia and elsewhere.
Excerpt from:
U.N. agency warns of possible bird flu resurgence
The United Nations warned of a possible major resurgence of bird flu and said a mutant strain of the H5N1 virus was spreading in Asia and elsewhere.
Excerpt from:
U.N. agency warns of possible bird flu resurgence
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