A Hong Kong woman has been diagnosed with dengue fever, marking the fourth locally transmitted case reported in the city this year. The 59-year-old patient, who lives in Tin Ma Court in Wong Tai Sin, had developed fever, chills and skin rash on September 9. She was admitted to Queen Mary Hospital on September 15 and was discharged on Monday in a stable condition. Blood tests confirmed she had been infected by the mosquito-borne dengue virus. Mosquito infestation in Hong Kong reaches ‘alert’ level, index shows, prompting fears of dengue and Zika virus transmission The Centre for Health Protection said the woman had no recent travel history. “During the incubation period [of the virus], according to the patient, she mainly stayed at home and went to her workplace on Argyle Street, Kowloon City,” the centre’s spokesman said, adding that further investigations into what other places she had visited are underway. The woman’s housemates remained asymptomatic so far and had been put under medical surveillance. “The centre immediately commenced epidemiological investigations and promptly informed the Food and Environmental Hygiene Department for vector investigation and mosquito control,” the spokesman added. Health authorities will conduct site visits and field investigations using questionnaire surveys around the patient’s residence. Dengue strikes again: Hong Kong woman is confirmed to be third local case this year Dengue fever is transmitted to humans through bites from infected female Aedes mosquitoes – a common species that can also spread the Zika virus. Severe dengue fever can be fatal. Symptoms begin three to 14 days after infection and can include fever, headache, vomiting, muscle and joint pain, and a rash. Three local dengue fever cases were reported last month . The patients all lived on Hong Kong Island – on Caine Road, Shelley Street and Conduit Road of the Central and Western Districts.