Bird flu: Victims sick in three days

People infected with Asia’s bird flu get sick about three days after exposure to the virus, suffering fevers and coughing, the World Health Organisation has found, in the first clinical data of patients with the current strain.

The data was collected by Vietnamese doctors on 10 of their country’s patients infected with the H5N1 strain of bird flu that has affected poultry across much of the Asian continent and jumped to humans in Thailand and Vietnam.