objective:to understand the epidemiological situation and prevention of hiv vertical transmission from mother to child in yunnan, which can supply some scientific basis for the hiv/aids prevention.
目的:了解云南省hiv母婴垂直传播的流行趋势,探讨如何减少或阻断hiv母婴垂直传播,为预防和控制母婴垂直传播hiv提供一些依据。