使用受感染的血液或血液制品，是所有传播HIV病毒的途径中最有效的。
Transfusion of infected blood or blood products is the most efficient of all ways to transmit HIV.
裂谷热的传播途径主要是通过直接或间接与感染动物的血液或器官接触，人可在被感染蚊子叮咬后受感染。
The main mode of transmission of RVF is via direct or indirect contact with the blood or organs of infected animals. Human infections have also resulted from the bites of infected mosquitoes.
艾滋病传播的其中一条途径是通过血液传播，农民工千万不要与他人共用牙刷、剃须刀。
One of the spread of AIDS is through blood-borne, migrant workers do not share toothbrushes, razors.
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