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(added on 2012/04/19)

Eradicating Polio 讓小兒麻痺症絕跡

©2012 SpatioEpi.com
Data source: World Health Organization
Map created by CUHK SpatioEpi Group

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Thanks to global efforts in the last two decades, the number of polio cases has fallen by more than 99%. To underscore the importance of immunization, World Immunization Week is observed from 21-28 April this year.

As depicted by graduated colours, the coverage of the 3rd dose of polio vaccines in infants was generally higher than 80% in polio-free countries. Coloured country borders indicate different levels of poliovirus transmission. After removal of India from the list of polio endemic countries in February 2012, Afghanistan, Nigeria and Pakistan are the three remaining countries with indigenous wild poliovirus transmission. Currently, the geographic area affected by polio is the smallest in history. However, efforts for polio eradication should not slack off as re-established transmission and imported cases have continued to be reported in some countries with low coverage of polio vaccines.

Data for the map were obtained from World Health Organization.

透過過去二十年全球的共同努力,小兒麻痺症的病例數目已有超過九成九的減幅。為了強調接種疫苗的重要性,今年的四月二十一至二十八日已被定為世界免疫週。

依圖中顏色所示,成功根除小兒麻痺症的國家中,嬰孩三次接種小兒麻痺疫苗的覆蓋率普遍超過八成。另外,顏色國界標示各國小兒麻痺症的流行程度。2012年2月,印度被正式宣佈成為根除小兒麻痺症的國家。全球流行小兒麻痺症的國家只剩下阿富汗、尼日尼亞及巴基斯坦三國,令現時受小兒麻痺症影響的地區縮至歷史上最小。縱然如此,一些小兒麻痺疫苗低覆蓋率的國家正受外地傳入的病例所威脅,因此消滅小兒麻痺症的工作仍不可鬆懈。

地圖資料源自世界衛生組織。