ANKARA: Health authorities said on Monday preliminary tests confirmed that a 12-year-old girl who died was infected with the deadly H5N1 strain of bird flu, raising Turkey's death toll to four and the number of human cases in the country to 20. Fatma Ozcan died on Sunday in the eastern city of Van, but initial tests had been negative for H5N1. The Health Ministry ordered a new round of tests after her 5-year-old brother, Muhammet, tested positive on Sunday, and officials said those confirmed she was infected. Five of the patients had been discharged from hospitals as of Monday afternoon, leaving only 11 still in treatment, the Ministry said. It said all but one of those patients were listed in stable condition. Authorities hastily buried Fatma on Sunday evening, wrapping her in a special body bag to contain any virus. The girl was from Dogubayazit - the same town where three siblings died of bird flu about 10 days ago. At least 77 others in east and south Asia have died since the virus surfaced, the World Health Organisation says. WHO has confirmed two of the four Turkish deaths. - AP