Memory CD4<sup>+sup> T cells with latently integrated proviruses are a major barrier to curing HIV infection.
Proviral integration within genes involved in cancer may contribute to clonal proliferation of latently infected CD4<sup>+sup> T cells.
Challenges to clearing viral reservoirs within B cell follicles of lymph nodes.
Immunotherapy shows promise for clearing HIV infection.
Combination approaches may be necessary to cure HIV infection.