Sent_en: 2zh AIDS is estimated to have killed 25 million people worldwide since 1981, and between 33 and 46 million more are estimated to be infected with HIV, more than half of them in Sub-Saharan Africa.
Sent_yy: 据估计，自1981年以来，艾滋病在全世界已造成2500万人死亡，估计还有3300万至4600万人感染艾滋病毒，其中一半以上在撒哈拉以南非洲地区。