As you know, AIDS is an acronym for "Acquired Immune Deficiency Syndrome" - therefore AIDS is a syndrome, i.e. a collection of well-known diseases, with well-known causes.
Kama unavyofahamu, UKIMWI ni kifupisho cha maneno "Upungufu wa Kinga Mwilini" - na hivyo UKIMWI ni upungufu wa kinga, yaani, mkusanyiko wa magonjwa yanayofahamika, yenye visababishi vinavyofahamika.