<unk> , or immune reconstitution inflammatory<unk>  (IRIS), refers to the paradoxical worsening of pre-existing infections after antiretroviral therapy (ART) is intiated for HIV. It occurs due to increases in T lymphocyte numbers that occurs after ART is started as well as increased immune response.
Immune reconstitution syndrome
Progression of HIV/AIDS
Immune reconstitution inflammatory syndrome
Antimicrobial resistance
Cytokine release syndrome
Medication noncompliance
Transfusion-associated graft-versus-host disease
Development of new opportunistic infection rather than recrudescence