Opinion Poll 意見調查 Email Alert 電郵快訊

 

Story maps
故事地圖


Virus flying in 飛躍流感

(added on 2009/05/27)

©2009 SpatioEpi.com
Data source: Various newspapers
Map created by CUHK SpatioEpi Group

Back

The map shows the flight paths of the first 6 cases of laboratory-confirmed “swine flu” in the region covering Mainland China and Hong Kong, before entering our home cities. As a respiratory infection, influenza virus is transmitted through person-to-person contacts, and “swine flu” is no exception. In modern days, the high intensity and extensiveness of air travel has shortened the distance between people, bringing the source of infection closer to distant populations in almost no time. Presumably originating in Mexico, the virus found its way through long distance air travel to Asian communities. The map has incorporated information obtained from multiple sources in the media.

First imported swine flu [Influenza A (H1N1)] cases in China and Hong Kong

地圖顯示香港及中國大陸首 六例『人類豬流感』確診個案的航空路線,可見他們抵港或附近城市前曾經到過的地方。流感是呼吸道傳染病,一般經人和人近距離接觸傳播,『人類豬流感』亦不例外。由於空中交通發達,現代社會的人際交往越趨頻繁,更將人與人之間的距離縮短,令傳染病擴散加速。相信源自墨西哥的新型『人類豬流感』病毒,透過航空交通網很快便傳到亞洲地區。地圖資料源自不同的媒體報導。

中國與香港的輸入性人類豬型流感個案

Related Article

Human influenza 人類流感

Influenza is a respiratory infection caused by the influenza virus, different forms of which are normally circulating in not just human beings but pigs and birds. All influenza viruses are divided into A, B and C, and further distinguished by their H and N antigens. There are currently 16 H (standing for haemaglutinin) and 9 N (standing for neuraminidase) antigens. The novel swine flu discovered in 2009 has probably originated from pigs and is classified as Influenza A (H1N1). The genetic structure of the novel swine flu contains segments from pig, bird and human, reflecting the occurrence of reassortment. Studies suggested a case fatality rate of 0.4% for the novel infection, and a higher tendency for causing disease in young people compared to seasonal flu.

流感是指『流感病毒』引起的呼吸道傳染病,所影響的不單是人,也包括豬和禽鳥。『流感病毒』分甲、乙、丙三個主要類型,又以H(血凝素)和N(神經氨酸酶)基因作更仔細的分類,而現時已知的共有十六種H和九種N基因。二零零九年新發現的人類豬型流感病毒屬於甲型H1N1類型,相信源頭來自豬隻。新病毒包含了人、豬和禽鳥流感病毒基因,反映了基因重組現象。研究顯示,新流感的死亡率約百份之零點四。而相對於季節性流感,新流感對年青人的致病機會相對較高。


Related maps 相關地圖

Other resources 其他資訊

Organisations 有關機構

Further information 詳細資料