Taiwan's Central Epidemic Command Center confirmed H7N9 avian influenza in a Taiwanese man who was recently in China, marking the first documented case of the virus outside mainland China. The man reportedly is in isolation and has severe symptoms. More than 100 people with known exposure to the man are being observed for signs of illness, and three of the health care workers who have come into contact with the patient have developed upper-respiratory infection symptoms. No cases of human-to-human transmission have been confirmed.
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