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.

Some information for this report was provided by AFP and Reuters.