Demographic characteristics and clinical information of subjects.

Note: Definition of classification of HIV infection stage: Acute/Early stage: patients are RNA+ and antibody negative or have serologic proof of infection within the previous 4 months. AIDS stage: patients whose CD4 count is <200cells/µL. Presymptomatic stage: patients between acute/early stage and AIDS stage.备注：HIV感染分期的定义如下：急性/早期阶段 (Acute/Early stage)：患者RNA检测呈阳性且抗体呈阴性，或在既往4个月内存在血清学感染证据。艾滋病阶段 (AIDS stage)：CD4细胞计数<200cells/µL的患者。症状前期 (Presymptomatic stage)：介于急性/早期阶段与艾滋病阶段之间的患者。