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Hepatitis A prevalence among injection drug users.
Rebecca Wells1, Dennis Fisher, Andrea Fenaughty
1Section of Chronic Disease Prevention and Health Promotion, Department of Health and Social Services, Juneau, AK, USA.
Summary
Hepatitis A virus (HAV) prevalence was 33% in injection drug users (IDUs). Factors like hepatitis B core antibody status, education, age, and heroin use influenced HAV infection risk. IDUs need hepatitis vaccination and hygiene interventions.
Area of Science:
- Infectious Diseases
- Public Health
- Epidemiology
Background:
- Hepatitis A virus (HAV) poses a significant health risk, particularly in vulnerable populations.
- Injection drug users (IDUs) are at increased risk for various infectious diseases due to their lifestyle and potential for exposure.
- Understanding the specific risk factors for HAV infection within the IDU community is crucial for targeted prevention strategies.
Purpose of the Study:
- To develop a descriptive model illustrating the association between injection drug use and hepatitis A virus infection.
- To identify demographic and behavioral factors associated with HAV seroprevalence among injection drug users.
Main Methods:
- A cohort of 493 injection drug users in Anchorage, Alaska, were enrolled between May 1997 and July 1999.
- Participants completed the NIDA Risk Behavior Assessment (RBA), and blood samples were analyzed for antibodies to HAV, hepatitis B core (HBcAB), and hepatitis C.
- Logistic regression analysis was employed to identify predictors of positive HAV serostatus.
Main Results:
- The overall prevalence of HAV antibodies in the study sample was 33%.
- Key predictors of HAV infection included positive HBcAB serostatus (OR=3.43), less than high school education (OR=2.05), increased age (OR=1.06 per year), and more frequent heroin injection (OR=1.05 per day).
- White race was associated with a lower likelihood of HAV infection (OR=0.49) compared to other racial/ethnic groups.
Conclusions:
- A comprehensive model incorporating demographic and drug use variables effectively describes HAV prevalence in this IDU sample.
- Findings underscore the need for targeted interventions, including hepatitis A vaccination and improved hygiene practices, for injection drug users.
- Further research is recommended to elucidate the relationship between HAV and hepatitis B infection in this population.