Bird Flu Transmitted to Humans for the First Time
Scientists in China have confirmed for the first time that birds, specifically chickens at a poultry market, have transmitted the bird flu virus to humans.
Researchers found all four of the patients tested had been exposed to infected poultry.
An estimated 100 people in China have been infected with the virus since February and almost two dozen people have been killed.
The scientists add that so far there has been no person to person transmission of the virus.