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Transfusion of blood and blood products help save and improve life and health of people worldwide every year. It helps and support complex medical conditions improving health of patients suffering from life threatening circumstances. Various patients however do not get timely admission of safe blood. The shortage of blood can only be reduced by regular unpaid blood donation. 每年，输血和血液产品会在世界范围内救死扶伤。对于病危的患者来说，它们就像黎明的曙光。然而也有太多人与安全输血失之交臂。库存血液的紧缺也只能靠常规的无偿献血来缓解。 In the world today about 62 countries only have 100% blood supply from the unrewarded voluntary blood donors. With around 40 countries depending on the paid or family donors. Every year around 92 million units of blood is collected internationally from voluntary blood donations. Each year the countries celebrate world blood donor day on 14 June to raise awareness and thank the voluntary unpaid donors. 目前全球仅有62个国家的输血血液全部来源为无偿捐血志愿者。还有40来个国家倚赖有偿献血或家庭成员捐助。每年国际上采集的志愿血液约合九千两百万份。各国之间将每年的6月14日定为世界献血日，其目的在于提升公民献血意识，称颂无偿献血者。 The occurrence of blood borne infections is low among the voluntary blood donors which is the safe group. WHO encourages people both from urban or rural areas to continue donating blood and the young people who are in good health are encouraged to begin doing so. The goal of every country is to obtain their blood supplies from voluntary blood contribution. | 
