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Published on: July 16, 2012
[Risk factors for HIV infection among patients infected with hepatitis C virus]
Anita Campos Mendonça Silva1, Antônio Alci Barone
1Divisão de Clínica de Moléstias Infecciosas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil. anitacampos@uol.com.br
Insights
Female sex, being divorced/widow, and illegal drug use are risk factors for HIV infection in hepatitis C virus patients. Sharing pipes or needles significantly increases co-infection risk.
Area of Science:
- Epidemiology
- Virology
- Public Health
Context:
- Hepatitis C virus (HCV) and human immunodeficiency virus (HIV) share transmission routes, leading to high co-infection rates globally.
- Injectable drug use and blood transfusion history are common factors associated with HCV/HIV co-infection.
- Understanding specific risk factors for HIV in HCV-infected individuals is crucial for targeted prevention and treatment strategies.
Purpose:
- To identify and evaluate sociodemographic and behavioral risk factors associated with HIV infection among patients already infected with the hepatitis C virus.
- To determine the independent risk factors for HCV/HIV co-infection using a case-control study design.
Summary:
- A case-control study involving 118 HCV/HIV co-infected patients and 233 HCV-monoinfected patients was conducted.
- Key risk factors identified for HCV/HIV co-infection included female sex, divorced/widowed status, past or current illegal drug use, and the habit of sharing pipes or needles.
- Multivariate analysis confirmed female sex as a risk factor for HIV infection in HCV patients, even after adjusting for needle/pipe sharing.
Impact:
- Findings highlight specific populations and behaviors that require focused interventions to prevent HIV transmission among HCV-infected individuals.
- The study underscores the importance of harm reduction strategies, particularly for those who inject drugs, to mitigate co-infection risks.
- Results can inform public health policies and clinical guidelines for screening and managing HCV/HIV co-infection.
Objective:
Human immunodeficiency virus and hepatitis C virus share the same routes of transmission. Currently, there is a high frequency of co-infection worldwide, especially among users of injectable drugs and in subjects with history of blood transfusions. The aim of the present study was to evaluate risk factors associated to human immunodeficiency virus infection in patients infected with hepatitis C virus.
Methods:
We carried out an epidemiological case-control study, including 118 patients (cases) infected by both viruses and 233 patients (controls) infected only by the hepatitis C virus. Between January 1999 and November 2001, patients responded to a questionnaire assessing sociodemographic and professional characteristics, and major risk factors for virus infection. After description and initial comparison, variables were evaluated by univariate analysis and then by multivariate logistic regression for variables selected through the maximum likelihood test.
Results:
Co-infection was associated with female sex (OR = 2.89; 95% CI: 1.16-7.08), being divorced/widow (OR = 3.91; 95% CI: 1.34-11.35), past or current use of illegal drugs (OR = 3.96; 95% CI: 1.55-10.13) and to the habit of sharing pipes or needles (OR = 10.28; 95% CI: 4.00-6.42).
Conclusions:
Among patients infected with hepatitis C virus, female sex is a risk factor for HIV infection after adjustment for the habit of sharing pipes and needles. Being divorced/widow, use of illegal drugs, and the habit of sharing pipes and syringes were associated to co-infection.
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