Apes and monkeys will be infected with human immunodeficiency virus similar (HIV) of the AIDS virus, it is called apes immunodeficiency virus (SIV), but they are generally no symptoms.

• 猿类与猴类也会感染类似人类免疫缺陷病毒（HIV）的艾滋病病毒，那被称之为猿类免疫缺陷病毒（SIV），但它们普遍不出现病症。