April 18 - Chinese authorities are investigating the possibility of the human-to-human spread of the H7N9 bird flu virus as a Shanghai patient infected with avian influenza makes a full recovery. Simon Hanna reports.
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Sixty-six-year old Yang leaves a Shanghai hospital in good health after recovering from a new strain of bird flu.
The virus, known as H7N9 has claimed 17 lives in China, but this patient appears to have made a full recovery.
He says he was coughing and sick when he went to hospital but feels much better after the treatment.
The first two detected H7N9 patients in Beijing have also left hospital.
Authorities have slaughtered thousands of birds and closed some live poultry markets to slow the rate of human infection.
But many aspects of this new variety of bird flu remain a mystery, particularly whether the new strain is being transmitted between people.
The World Health Organisation has said that a number of patients who have tested positive for H7N9 had no history of contact with poultry.
China has warned that the number of infections - so far at 82 - could rise.
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