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Bird Flu Is Spreading in Asia, Experts (Quietly) Warn

Noted: At about the same time, a well-known virologist at the University of Wisconsin — Madison showed that a Chinese H7N9 strain could both kill ferrets and be transmitted between them. Because ferrets suffer roughly the same effects from flu that humans do, the development was “not good for public health,” said the virologist, Dr. Yoshihiro Kawaoka.