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(added on 2010/06/10)

New blood for the world 為地球注新血

©2010 SpatioEpi.com
Data source: World Health Organization (WHO)
Map created by CUHK SpatioEpi Group

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Blood transfusion is needed for surgery and other medical treatments. Constant supply of blood is vital to save lives and improve health. The map shows the availability of blood in each country, expressed as the number of blood donations per 1000 population. It is estimated that a country needs at least 10-30 donations per 1000 population every year for achieving self-sufficiency in blood supply. As depicted by graduated colours, blood donation in up to half of the countries is inadequate based on this estimation. The blood symbols indicate countries where 100% blood is supplied by voluntary unpaid donors, which is considered as a safer source of blood. This is achieved in <1/3 of the countries, half of which located in Europe. Data for this map were obtained from a World Health Organisation survey released in 2007.

病人由於手術失血及其他治療,往往需要接受輸血,穩定的血液供應對拯救生命及改善健康尤為重要。地圖顯示全球各國每一千人口的捐血次數,從而反映血液供應情況,而當中血液圖案則標示全由自願無償捐血者提供血液的國家。據估計,以一個有一千人口的國家推算,每一年便需要最少十至三十次捐血才可有自足的血液供應。依圖中顏色所示,全球幾乎半數國家的捐血次數比這估計的最低要求還少。另外,自願無償捐血者被認為是安全血液的來源,全球祇有三份一國家的血液全由他們供應,當中一半位於歐洲。地圖資料源自世界衛生組織於2007年發佈的一份調查報告。