# HIV, hepatitis C, and syphilis among people who use crack cocaine in Brazil: evidence of a hidden epidemic - URL: https://alisanburak.com/en/wcp-2026-posterler/ev0039 - Language: en - Last updated: not specified - Page title: HIV, hepatitis C, and syphilis among people who use crack cocaine in Brazil: evidence of a hidden epidemic | WCP 2026 Summary > Approximately 8% to 10% of men hospitalized for crack and cocaine use disorder tested positive for HIV or anti-HCV or had reactive VDRL results, and each infec… This page was translated automatically from Turkish. [Read the original](https://alisanburak.com/wcp-2026-posterler/ev0039) This page is an AI-assisted Turkish summary of the study presented at the 26th World Congress of Psychiatry. The study belongs to the presenting authors; please refer to the original source when citing it. EV0039 E-PosterAddictionCross-sectional study # HIV, hepatitis C, and syphilis among people who use crack cocaine in Brazil: evidence of a hidden epidemic HIV, HEPATITIS C, AND SYPHILIS AMONG CRACK COCAINE USERS IN BRAZIL: EVIDENCE OF A HIDDEN EPIDEMIC Presenter: Felipe R. Ornell Country: Brazil Approximately 8% to 10% of men hospitalized for crack and cocaine use disorder tested positive for HIV or anti-HCV or had reactive VDRL results, and each infection showed a distinct risk profile. The study aimed to determine the prevalence of HIV positivity, anti-HCV positivity, and VDRL reactivity, along with their independently associated factors, among patients hospitalized for crack and cocaine use disorder. In a cross-sectional design, HIV, anti-HCV, and VDRL serology was assessed in 847 men receiving inpatient treatment in Porto Alegre between 2013 and 2026. Separate robust Poisson regression models were used for each outcome to calculate adjusted prevalence ratios (PRs) and 95% confidence intervals (CIs). HIV positivity was 9.1% (77/842), anti-HCV positivity was 10.3% (85/828), and VDRL reactivity was 8.0% (66/823). Among the 805 participants with complete serological results, 178 (22.1%) had at least one positive or reactive marker, 40 (5.0%) had at least two positive markers, and 4 had all three markers. HIV positivity was associated with lifetime injection drug use (PR 2.09; 95% CI 1.07 to 4.10), while anti-HCV positivity was associated with injection drug use (4.19; 2.47 to 7.10), age 40 to 49 years (3.95; 2.10 to 7.45), a history of incarceration (2.40; 1.36 to 4.23), lower educational attainment (1.71; 1.06 to 2.76), being married (1.63; 1.03 to 2.60), and years of crack/cocaine use (1.03; 1.00 to 1.05). VDRL reactivity was associated with non-white skin color (1.76; 1.07 to 2.90). As a potential diagnostic gap, 10.7% of HIV-positive participants were reported to be unaware of their status, and 31.1% of anti-HCV-positive participants had no history of hepatitis. In conclusion, the study identifies a shared burden of infection but distinct pathways of vulnerability, highlighting addiction treatment settings as opportunities for integrated screening, prevention, and linkage to care. [View the original poster](https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/1771) How to cite this study APA 7: Ornell, F. R., Schuch, J. B., Scherer, J. N., Pechansky, F., Kessler, F., & Von Diemen, L. (2026, September 23-26). Hiv, hepatitis c, and syphilis among crack cocaine users in brazil: evidence of a hidden epidemic [E-poster]. 26th WPA World Congress of Psychiatry (WCP 2026), Stockholm, Sweden. https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/1771 Vancouver: Ornell FR, Schuch JB, Scherer JN, Pechansky F, Kessler F, Von Diemen L. Hiv, hepatitis c, and syphilis among crack cocaine users in brazil: evidence of a hidden epidemic [e-poster]. 26th WPA World Congress of Psychiatry (WCP 2026); 2026 Sep 23-26; Stockholm, Sweden. Available from: https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/1771 Author names and title formatting were generated automatically from the congress system; please check them against the original poster before use. ## On the same topic - [Kannabis kaynaklı psikotik bozuklukta yatışlar ve yeniden yatışlar: retrospektif bir kohort çalışması (2018 ile 2024 arası)](https://alisanburak.com/en/wcp-2026-posterler/ev0001) - [Bağımlılıklarda psikoplasti ve bütünleşik yönetim: ASAM ölçütleri kullanılarak ödül yolağının yeniden biçimlendirilmesine yönelik nörobiyolojik bir algoritma](https://alisanburak.com/en/wcp-2026-posterler/ev0003) - [Slovenya cezaevi hizmetinde depo buprenorfin uygulamasının başlatılması](https://alisanburak.com/en/wcp-2026-posterler/ev0004) - [Bağımlılıklarda metilfenidat: DEHB olan ve olmayan erişkinlerde madde kullanımı ve bağımlılık yapan davranışlara ilişkin gelişen kanıtlar](https://alisanburak.com/en/wcp-2026-posterler/ev0005) - [Malezya'da naltreksonun genişleyen klinik kullanım alanları: madde kullanımı ve madde dışı psikiyatrik bozukluklar açısından çıkarımlar](https://alisanburak.com/en/wcp-2026-posterler/ev0006) [All WCP 2026 summaries](https://alisanburak.com/en/wcp-2026-posterler) --- Kaynak / Source: https://alisanburak.com/en/wcp-2026-posterler/ev0039 İletişim / Contact: Bağdat Caddesi, Veli Güneysu Apt. No:453 K:4 D:9, Suadiye / Kadıköy, İstanbul · +90 532 642 95 25 · info@alisanburak.com · https://alisanburak.com/bagdat-caddesi-psikoterapi-iletisim