Rio de Janeiro AIDS Conference Highlights HIV Stigma Study and Stem‑Cell Remission Cases
The 26th International AIDS Conference was held in Rio de Janeiro, the first time Brazil hosted the event. Researchers from the Tackle HIV initiative surveyed 2,006 Brazilian adults and found that 36% believe heterosexual men are not at risk of HIV, 37% hold the same view for heterosexual women, only 48% have ever been tested, and 19% think people living with HIV cannot have a normal sexual life. The study warns that the persistence of stigma could cause up to 440,000 avoidable deaths this decade. Brazil recorded 39,216 new HIV infections in 2025, with 38.4% of cases in the Southeast, and has met UNAIDS 95‑95‑95 targets for diagnosis (2020) and viral suppression (2024). The federal government is evaluating the inclusion of injectable pre‑exposure prophylaxis (PrEP) in the public health system.
At the same conference, scientists announced two additional cases of HIV remission after hematopoietic stem‑cell transplantation using donors with the CCR5‑delta32 mutation, raising the worldwide total of patients with undetectable virus after transplant to 13. One case, dubbed the “Kansas City patient” (USA), has remained virus‑free for 14 months; the other, the “Essen patient” (Germany), has been virus‑free for 12 months but experienced a recurrence of hepatitis B. Both patients had concurrent blood cancers and stopped antiretroviral therapy after transplant. Researchers stress that the outcomes represent remission rather than a definitive cure and that long‑term monitoring is needed.
Entities: CCR5‑delta32 mutation · CCR5‑Δ32 mutation · Essen patient · International AIDS Conference · Kansas City patient · Rio de Janeiro · Tackle HIV
Claims
What the coverage asserts, and how well corroborated each claim is across sources.
- [● 5 SOURCES] Only 48% of surveyed Brazilian adults have ever taken an HIV test. (Tackle HIV survey)
- [● 5 SOURCES] Brazil reported 39,216 new HIV infections in 2025, with 38.4% of cases located in the Southeast region. (Brazilian Epidemiological Bulletin 2025)
- [● 6 SOURCES] Two new cases of HIV remission after hematopoietic stem‑cell transplantation using CCR5‑delta32 donors were reported, bringing the worldwide total of undetectable patients after transplant to 13. (Conference presentation)
- [● 6 SOURCES] The 'Kansas City patient' has been HIV‑free for 14 months after transplant, and the 'Essen patient' for 12 months, though hepatitis B recurred in the latter. (Conference presentation)
- [● 2 SOURCES] Brazil achieved the UNAIDS 95‑95‑95 targets: 95% of people with HIV know their status (2020) and 95% of those in treatment have viral suppression (2024). (Brazilian health authorities)
- [● 5 SOURCES] The Tackle HIV survey warned that stigma could cause about 440,000 avoidable deaths this decade. (Tackle HIV research)
- [○ 1 SOURCE] Brazil's federal government is studying the inclusion of injectable PrEP in the public health system (SUS). (Brazilian government statements)
- [● 5 SOURCES] 36% of respondents think heterosexual men are not at risk of HIV; 37% think heterosexual women are not at risk. (Tackle HIV survey)