Five African countries are currently conducting phase I and phase II clinical trials of candidate HIV vaccines: Botswana, Kenya, Rwanda, South Africa, Uganda, soon to be joined by Tanzania.
五个非洲国家目前正在开展候选艾滋病毒疫苗的一期和二期临床试验：博茨瓦纳、肯尼亚、卢旺达、南非、乌干达，坦桑尼亚很快也将介入。
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