Experts say they have found key component of the H5N1 bird flu virus . It is hoped this will lead to better medication to fight the infection . The discovery is generating excitement among scientists who are looking for a new weapon against the bird flu virus that typically kills more than half its human victims . China reported its first human-to-human infection in 2005 . Comment:
Experts say they have found key component of the H5N1 bird flu virus . It is hoped this will lead to better medication to fight the infection . China reported its first human-to-human infection in 2005 . Comment: