A comprehensive 14-year multicenter study spanning China’s major HIV care centers has revealed alarming rates of sexually transmitted infections among people living with HIV, with nearly 40% experiencing recurrent infections. The research, published in The Lancet Regional Health – Western Pacific, represents the most extensive longitudinal analysis of HIV-STI co-epidemics in the region to date.
STI Prevalence Among HIV-Positive Patients in China
Percentage of patients with each infection type, 2010-2024 cohort study
Source: Chen et al., The Lancet Regional Health, 2024 | Georgian Medical Journal News
Syphilis and HPV Dominate Co-infection Landscape
The study, led by researchers from the Chinese Center for Disease Control and Prevention, tracked 47,892 HIV-positive individuals across 15 provinces from 2010 to 2024. Syphilis emerged as the most prevalent co-infection, affecting 45.2% of participants, followed closely by human papillomavirus at 38.1%. These findings align with global health patterns observed in similar populations worldwide.
Dr. Wei Chen, the study’s principal investigator at the National Center for AIDS/STD Control and Prevention, noted that “the persistently high rates of syphilis co-infection represent a critical challenge for HIV care programs.” The research methodology involved systematic STI screening at HIV care entry and during routine follow-up visits, providing unprecedented longitudinal data on infection patterns.
Bacterial STIs Show Sharp Resurgence After 2018
A particularly concerning trend emerged in the analysis of bacterial infections over time. According to data published in The Lancet Regional Health, gonorrhea and chlamydia infections showed a marked increase after 2018, reversing earlier declining trends. Gonorrhea rates rose from 18.1% in 2018 to 22.3% by 2024, while chlamydia infections increased from 15.2% to 18.7% over the same period.
The World Health Organization has identified antimicrobial resistance as a key driver of bacterial STI resurgence globally. The Chinese study’s findings suggest that integrated prevention strategies must account for evolving bacterial resistance patterns, particularly in immunocompromised populations.
Regional Variations Point to Social Determinants
Geographic analysis revealed significant provincial variations in STI prevalence, with rates ranging from 28.4% in rural western provinces to 67.2% in major urban centers. These disparities reflect broader social determinants of health, including healthcare access, stigma, and prevention resource allocation. The study authors emphasize that such variations require tailored policy approaches rather than uniform national strategies.
Men who have sex with men (MSM) represented the highest-risk demographic, accounting for 52.3% of recurrent infections despite comprising only 31.7% of the study population. This finding underscores the need for culturally appropriate prevention interventions targeting key populations, as highlighted by recent CDC treatment guidelines.
Implications for Western Pacific Health Systems
The study’s implications extend beyond China’s borders, offering crucial insights for HIV-STI integration across the Western Pacific region. Countries including Australia, Japan, and the Philippines face similar co-epidemic challenges, though with varying epidemiological patterns. The research provides a methodological framework for systematic STI surveillance within existing HIV care infrastructure.
Integration of STI screening into routine HIV care emerged as a cost-effective strategy, with the study demonstrating that systematic screening identified 23.1% more infections than symptom-based testing alone. This approach aligns with emerging evidence from clinical practice suggesting that proactive screening improves both HIV and STI outcomes.
Systematic STI screening in HIV care settings identified 23.1% more infections compared to symptom-based testing, with syphilis showing the highest recurrence rate at 31.4% over five years.
— Dr. Wei Chen, National Center for AIDS/STD Control and Prevention (The Lancet Regional Health, 2024)
Key takeaways
- Nearly 40% of HIV-positive patients experienced recurrent STIs over 14 years, with syphilis affecting 45.2% of participants
- Bacterial STI rates increased sharply after 2018, with gonorrhea rising from 18.1% to 22.3% by 2024
- Systematic screening identified 23.1% more infections than symptom-based approaches, supporting integrated HIV-STI care models
Frequently asked questions
Why do HIV-positive individuals have higher STI rates?
HIV compromises immune function, making individuals more susceptible to other infections. Additionally, shared transmission routes and behavioral risk factors contribute to co-infection patterns, as demonstrated in this 14-year Chinese cohort study.
How effective is integrated HIV-STI screening?
The study found that systematic STI screening identified 23.1% more infections compared to symptom-based testing alone. This approach is particularly cost-effective when integrated into existing HIV care infrastructure.
What explains the increase in bacterial STIs after 2018?
Multiple factors likely contribute, including antimicrobial resistance, changes in sexual behavior, and potentially reduced prevention program effectiveness. The study suggests need for enhanced bacterial STI surveillance and treatment protocols.
The study’s comprehensive methodology and extended follow-up period establish a new standard for HIV-STI co-epidemic research in the Western Pacific. As health systems worldwide grapple with integrated care delivery, these findings provide evidence-based guidance for policy development and resource allocation. The emphasis on systematic screening and sustained surveillance offers a pathway toward improved health outcomes for people living with HIV across diverse epidemiological contexts.
