The Vietnamese Health Ministry has confirmed that the country's latest human case of bird flu infection was a 23-year-old woman teacher from northern Phu Tho province who died on Monday after five days of treatment in the capital Hanoi, Xinhua news agency said quoting a report in local newspaper "Youth" Tuesday, reported Bernama Specimens from the woman from Cam Khe district, who started to show bird flu symptoms on Feb 14 and was admitted to the city-based Tropical Diseases Hospital on Feb 21, were tested positive to bird flu virus strain H5N1, the newspaper quoted Nguyen Huy Nga, director of the ministry's Preventive Medicine and Environment Department, as saying. The woman had not have direct contact with sick fowls before showing bird flu symptoms. Her family raises some chickens. A number of chickens died around her house recently. To date, Vietnam has confirmed a total of 105 human cases of bird flu infections, including 51 fatalities, since the disease started to hit the country in December 2003.