The World Health Organisation has asked Turkey for permission to send teams into infected villages to take blood samples, swab throats and interview families.
Hundreds of people are believed to have caught bird flu from infected poultry, but were not diagnosed because their symptoms were too mild, scientists revealed yesterday.
An ex-smoker who stubbed out his last cigarette two years ago is finding that even the slightest exercise leaves him puffed out. Our panel of experts offer advice.