Story maps
故事地圖

Dengue is one of the vector-borne viral infections commonly found in the tropics. As a city located in sub-tropical region, Hong Kong rarely has locally acquired dengue cases. However, Hong Kong is not free from risk of dengue outbreaks because of the presence of the vector, Aedes albopictus, and continuous dengue transmission in neighbouring countries.

The map shows the risk of dengue transmission in Southeast Asia and the origins of imported dengue cases in Hong Kong. As depicted by graduated colours, dengue is prevalent in most Southeast Asian countries. Since 2011, there have been 203 imported cases in Hong Kong, almost all of which were imported from Southeast Asia. The mosquito symbols indicate that the Philippines, Thailand and Indonesia are the major sites of infection of dengue cases imported into Hong Kong. All cases had travel history in dengue endemic countries during incubation period, which explains why reported numbers peaked during summer vacation in August.

Data for the map were obtained from reports of Centre for Health Protection, Department of Health, Hong Kong and published scientific literature.

登革熱是一種常見於熱帶地區的傳病媒介疾病，而處於亞熱帶地區的香港，登革熱本地感染個案並不普遍。不過，由於本港常見的白紋伊蚊能傳播登革熱，加上登革熱活躍於鄰近國家，本港也有爆發登革熱的風險。

地圖反映東南亞的登革熱傳播風險及顯示本港經外地傳入登革熱個案的來源地。依圖中顏色所示，大部分東南亞國家都受登革熱的威脅。自2011年起計，香港已有203宗外地傳入個案，當中絕大部分都是從東南亞傳入本港。依圖中蚊子圖案所示，菲律賓、泰國及印尼是三個最主要的外地傳入病例的源頭地方。所有個案都曾於潛伏期內到訪流行登革熱的國家，因此八月份的暑假是外地傳入登革熱個案的高峰期。

地圖資料源自香港衛生署衛生防護中心及已刊載文獻。