Antiretroviral Drugs Market size was valued at USD 62.9 billion in 2021, growing at a CAGR of 3.6% during the forecast period 2022-28. Cytopathic effects in cells in the brain and infected T cells may develop immune deficiencies and neurological diseases induced by HIV and related lentiviruses. Retrovirus causes immunological diseases including HIV and T-Cell leukaemia. Acquired immune deficiency syndrome (AIDS) caused by retrovirus known as human immunodeficiency virus (HIV) and T-Cell leukaemia caused by human T lymphotropic virus (HTLV).