Objective To study the origin of HIV blood spread in China.
目的探讨人类免疫缺陷病毒（HIV）血源传播来源问题。
Will donating blood spread diseases such as hepatitis, and AIDS?
献血会传染上肝炎、艾滋病等疾病吗？
Other factors include whether it causes disease, its mode of transmission, whether it can spread from person to person and whether it has spread to urban areas - via blood transfusions, for example.
其他因素包括它是否会致病、它的传播模式、它是否能在人与人之间传播以及它是否会传播到城市(例如通过输血)等等。
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