SEOUL, Sept. 22 (Xinhua) -- South Korea's health authorities on Tuesday confirmed the 9th death case related to the A/H1N1 flu virus.
A female A/H1N1 patient who lapsed into brain death on Sept. 4 has died, raising the country's death toll from the new virus to nine, the Ministry of Health and Welfare said.
The patient, a Seoul resident in her 40s, was tested positive for A/H1N1 flu virus earlier this month after she developed flu symptoms such as high fever and other respiratory problems.
She seemed to be recovering after receiving antiviral treatment, but her health conditions suddenly deteriorated and lapsed into brain death after suffering from cerebral edema and cerebral hemorrhage.
The country on Friday reported an 81-year-old female patient from South Jeolla province died as the 9th death case related to the new virus. But the ministry said on Tuesday that health authorities are still carrying out investigation on Friday's case to find whether the A/H1N1 virus was direct cause to her death.
South Korea reported its first death case from A/H1N1 flu on Aug. 15, and the 8th on Sept. 15.
The country reported its first new flu outbreak in early May, and more than 10,000 cases of the flu infections were confirmed across the nation, with three showing "very serious" symptoms, raising concerns there may be more flu-related deaths in the near future, according to the ministry.