JAKARTA (Reuters) - A 23-year-old Indonesian woman fromEast Jakarta has died from bird flu, taking the country's deathtoll to 100, according to a report from Indonesia's bird fluinformation centre on Monday.

The woman died on Sunday and two separate laboratory testsconfirmed she contracted H5N1, the report said.

Earlier on Monday, a 9-year-old Indonesian boy who hadtested positive for bird flu died, the health ministry said ina statement.

The boy from the outskirts of Jakarta died at the SuliantoSaroso hospital on Sunday after being treated in differenthospitals for two weeks, said Joko Suyono, an official at theministry's bird flu information centre.

It was not known how the boy contracted the disease.

Indonesia has had the highest number of human deaths frombird flu of any country.

A 31-year-old woman and 32-year-old man hospitalized atPersahabatan hospital for fever and respiratory problems alsotested positive for the deadly H5N1 virus on Monday, theministry said.

According to the statement, the woman lived in East Jakartanear a poultry slaughterhouse that kept many fowl believed tobe the source of her H5N1 infection.

The man from Tangerang, west of Jakarta, is believed tohave contracted H5N1 from his neighbor's pet doves, theministry said.

Contact with sick fowl is the most common way ofcontracting bird flu, endemic in bird populations in most ofIndonesia.

Although bird flu remains an animal disease, experts fearthe virus could mutate into a form easily passed from human tohuman and kill millions.

Suyono said there are no obvious explanations for thesudden surge of cases. "We need to carry more tests andinvestigation first to be really sure."

(Reporting by Mita Valina Liem and Adhityani Arga; Editingby Sara Webb and Jerry Norton)