The virus mutates quickly because mistakes often happen when it copies its DNA inside CD4 cells.
This makes it difficult to know exactly which part of the CD4 cell’s DNA belongs to HIV. As a result, it is harder to develop effective treatments.
HIV can hide inside resting CD4 cells. This makes it difficult to completely remove the virus from the body.
The HIV reservoir is an area that researchers do not fully understand yet. This makes finding a cure more challenging.
Instead of being destroyed by the immune system, HIV uses it to make more copies of itself.
This reverse use of the body’s defense system makes it extra difficult to fully remove HIV without damaging the immune system.