China says a fourth person is ill with bird flu.
The official Xinhua news agency reports the ministry of health has confirmed that a 10-year-old girl in China's southern Guangxi Zhuang Autonomous Region has the potentially deadly H5N1 virus.
Meanwhile, Ukraine has declared a state of emergency to help combat a bird flu outbreak in Crimea. More than 22,000 birds have been seized from villages in the affected area.
Also Tuesday, President Bush met with the director-general of the World Health Organization (WHO) to discuss the global strategy against a possible bird flu pandemic. Mr. Bush called the strategy a remarkable collaborative effort.
Earlier, Burma said it is on the alert for bird flu and will cooperate with international organizations in tracking outbreaks of the disease.