AIDS is pandemic and as yet there is no known cure, although antiviral drugs (such as zidovudine) are used to prolong the lives of AIDS patients.

• 艾滋病是一种世界流行病,虽有抗病毒药物(如齐多夫定)用以延长艾滋病患者生命,迄今仍无已知疗法。