"I Don't Believe That One": A Qualitative Study of Undetectable = Untransmittable Views Among Older Adults Living With HIV in South Carolina.

Undetectable = Untransmittable (U = U) means that people with HIV who achieve and maintain an undetectable viral load have effectively zero risk of sexually transmitting the virus to others. However, research on how U = U is perceived by older adults living with HIV (OAH) is currently lacking. This study explored U = U views among OAH. From October 2019 to February 2020, we conducted open-ended interviews with 24 OAH recruited at an HIV clinic in South Carolina. Interviews were audio-recorded and transcribed. We employed thematic analysis in this study. Three themes emerged from the analysis: (a) Conflicting beliefs in U = U; (b) Use condoms regardless; and (c) Fear of HIV reinfection. Despite strong scientific evidence supporting U = U, some OAH do not believe in U = U. This lack of belief could deprive OAH of the benefits U = U offers. Therefore, it is vital to educate OAH about U = U to enhance their understanding and belief in U = U.