China has announced its sixth human bird flu death.

Chinese health officials said Wednesday a 35-year-old woman from Sichuan province died last week from the H5N1 strain.

Meanwhile, Turkish officials say bird flu killed an 11-year-old girl on her way to a hospital Wednesday. And Iraqi health officials have sent samples to a lab, suspecting bird flu in the death of 14-year-old girl in the Kurdish city of Suleimaniya.

The news of the deaths came as international donors pledged nearly two billion dollars at a bird flu conference in Beijing, exceeding expectations.

The money will be used by poor countries to set up prevention programs.

U.N. officials say the virus - which has spread from southeast Asia and China into Turkey - could soon move into Africa and Europe with devastating effects.

Bird flu has killed more than 80 people since 2003.