In simple terms, rather than always using a cell it takes over to make as many copies of itself as possible which then circulate and get dealt with by the (poss

In simple terms, rather than always using a cell it takes over to make as many copies of itself as possible which then circulate and get dealt with by the (possibly boosted) immune system, HIV can hide itself in human DNA and let the normal human cell division process create a reservoir of apparently normal human cells which can produce copies of the virus in future