Tseung Kwan O has the highest risk of dengue fever incidence among Hong Kong’s 44 districts.
It reached warning levels for eight months during the four years to 2015, Ming Pao Daily reports, citing data from the Food and Environmental Hygiene Department.
The data was based on the monthly ovitrap index used to measure the prevalence of the aedes albopictus mosquito which carries the dengue virus.
Kwun Tong registered an ovitrap reading above the warning level for seven months during the period.
However, both readings have been normal since the beginning of 2015.
Dr. Tsang Tak-yin, an epidemiologist and a member of the Hong Kong Society for Infectious Diseases, said mosquito infestation in a single district does not mean a dengue outbreak.
Dengue infections in Hong Kong have been mostly brought in from abroad, he said.
Still, he said people need to be vigilant and health authorities should not let their guard down.
Hong Kong had 88 dengue cases as of Oct. 14, all but one of which were from other countries, including 17 from the Philippines, 15 from Thailand and 14 from Indonesia.
Tsang said people in affected areas should apply natural anti-mosquito liquids such as citronella oil on their skin every one or two hours and take dengue vaccines.
Dengue fever is a debilitating viral infection that can cause death if it results in bleeding from internal organs.
Symptoms include fever, headache, muscle and joint pains, and skin rash similar to measles.
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