Related: HK Informed of Human Avian Flu Case in Mainland

China's Ministry of Health has confirmed a 16-year-old boy has died from bird flu in eastern Anhui Province, bringing the number of people in the country who have been killed by the virus to 15.

The student, surnamed Wu from Bengbu City of Anhui, died on Tuesday in hospital after being treated there for ten days, a spokesman for the Anhui provincial health department said.

The boy developed symptoms of pneumonia, fever and muscle aches on March 17. He was admitted to hospital on March 18, the spokesman said.

Tests by the Chinese Center for Disease Control and Prevention on Tuesday confirmed that he had been infected with the H5N1 strain of the bird flu virus.

Local health authorities said they are monitoring those who had close contact with the patient. So far they have not shown symptoms of the disease, and there has been no reported outbreak of the disease among local fowl.

The local authority has not provided information on how the young student may have contracted the disease.

Last December, a 37-year-old farmer in the province was confirmed to have contracted the H5N1 strain of bird flu. The patient surnamed Li was discharged from hospital on Jan. 6 after a full recovery.

According to Anhui health authorities, the Health Ministry has informed the World Health Organization (WHO), health agencies in the two regions of Hong Kong and Macao and Taiwan Province, and some other countries.

China has reported a total of 24 human cases of bird flu since 2003.

On Feb. 28, a 44-year-old woman in southeast China's Fujian Province was confirmed by the health ministry to have contracted the bird flu virus. The patient, surnamed Li who is still being treated in hospital, had eaten chicken together with her family, but neither her husband nor son has fallen ill.

The Ministry of Health confirmed last August that the country's first human case of H5N1 bird flu virus occurred in November 2003. The case of a 24-year-old man, who died in Beijing in 2003, was initially thought to be a SARS case but was finally confirmed as a human avian influenza case after further laboratory tests.

China's last confirmed human fatality from the H5N1 strain of bird flu was a 62-year-old farmer in northwestern Xinjiang Uygur Autonomous Region. The man fell ill late last June and died on July 12.

Investigations showed the man did not have close contact with any sick or dead poultry, or humans infected with the disease, in the last month of his life.

According to the WHO figures, as of March 28, the cumulative number of confirmed human cases of avian influenza reported to the WHO was 284 worldwide since 2003, including 169 deaths. The figure does not include China's latest case.

Indonesia recorded its 71st human death from avian influenza after a 28-year-old woman died from the disease on Wednesday in Jakarta, an official with the country's health ministry said on Thursday.