Human Bird Flu Cases Present Puzzling Patterns (U.S. Department of State)
The World Health Organization (WHO) has issued a new fact sheet on avian influenza, the first since the disease moved out of Asia into Europe. The document summarizes the course of bird flu in its two-year spread across Eurasia. In regard to the human cases that have appeared in six nations, the fact sheet points out some puzzling unknown factors. Human cases of disease have not appeared in
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