Hong Kong bird flu has infected a woman inform the WHO China news agency, Hong Kong, November 3 - Hong Kong Department of Health, Center for Health Protection is investigating an imported case of influenza A (H9) virus. Influenza A (H9) is a mild form of avian flu. A CHP spokesman said three days, the patient was a 47-year-old woman living in Guangdong Province. She October 26 shortness of breath and cough with phlegm and other symptoms, medical treatment in Hong Kong October 28, admitted to Queen Mary Hospital and is now in stable condition. Survey, made on October 29 found that patients with respiratory tract samples of influenza A (H9) virus. The patients themselves have other diseases, have long-term medication. As she settled in Guangdong Province within the incubation period, the CHP has informed the Guangdong health authority the case for further action. Patients currently in hospital isolation for the purpose of detailed investigation, her family members and did not have symptoms, the CHP to them under medical surveillance. The spokesman said that the Department of Health has referred the case to inform the World Health Organization, the National Ministry of Health and Guangdong and Macao health authorities. Influenza A (H9) is an avian influenza virus, for many years isolated from duck and chicken out. Infection in humans is rare, is a mild disease. This is the sixth found in human H9 avian influenza virus. In the 1999, 2003, 2007 and 2008 were four girls and a boy infected with H9 viruses. The spokesman said that Hong Kong has a comprehensive avian flu surveillance system for monitoring the environment, as well as the avian flu virus, whether there will be genetic recombination, in order to take prompt contingency measures.