WHO: Deadly bird flu virus mutating
(AP)


<p><a href="http://us.rd.yahoo.com/dailynews/rss/health/*http://news.yahoo.com/s/ap/20060928/ap_on_he_me/un_bird_flu"><img src="http://d.yimg.com/us.yimg.com/p/ap/20060927/capt.xvy10309270942.hong_kong_chicken_bust_xvy103.jpg?x=130&y=87&sig=JjO5aNjYZRmCVMOw5aCCUA--" align="left" height="87" width="130" alt="Health workers wearing masks and protective gown, carry a woman who acts as a patients during an anti-avian flu drill at a hospital in Hong Kong Wednesday, Sept. 27, 2006.Hong Kong officials have seized about 6,000 live chickens being smuggled into the territory from mainland China. The seizure on Tuesday highlights the challenges Hong Kong faces as it tries to protect against the threat of bird flu spreading from mainland China, where several outbreaks have been reported in the past year. (AP Photo/Vincent Yu)" border="0" /></a>AP - The deadly H5N1 strain of bird flu which has killed at least 148 people is showing signs of being able to mutate and develop resistance to the most effective anti-viral drugs and any possible vaccines yet to be produced, a WHO scientist said Thursday.</p><br clear="all"/>