Among these the most serious include pneumocystis carinii pneumonia, cerebral toxoplasmosis (creating headaches and confusion) or ugly swelling as with Kapari's sarioma.
其中最嚴重的是肺囊蟲肺炎、大腦弓型蟲病（造成頭痛、抽搐、意識不清等），以及惡性腫瘤，如卡波西氏肉瘤。