Hong Kong SAR government is on high alert after a domestic helper was confirmed to have contracted the H7N9 bird flu - the first case in Hong Kong. With the 36-year-old patient still in critical condition in intensive care, another 17 people have been isolated and around 200 are under observation. Follow-up actions are in full swing in Hong Kong, following the city's first H7N9 case. 17 people who had close contact with the patient have been isolated, and more than 200 are under observation. Among them, 10 home contacts of the patient initially tested negative for the virus. "The confirmed case has been notified to the World Health Organization. No evidence show it will spread the risk of locals contracting H7N9 has not increased or changed." Dr. Leung Ting-Hung, controller of Center for Health Protection, said. However, medical experts say as the patient's infection was only confirmed after a third H7N9 test, this suggested a preliminary round might not be accurate enough. The government promised more tests would be taken, Xinhua reported.