At this point, certain conditions start to develop that are said to be " AIDS-defining" , such as recurrent bacterial pneumonia, pneumocystis pneumonia, and fungal infections like candidiasis of the esophagus.

具有艾滋病特征性的症状开始出现，如反复发作的细菌性、孢子菌真菌感染，如食管念珠菌病。