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Updated: Oct 19, 2026

Real-Time Polymerase Chain Reaction-Based Detection and Quantification of Hepatitis B Virus DNA
Published on: December 15, 2023
Injections given in healthcare settings as a major source of acute hepatitis B in Moldova
Y J Hutin1, R Harpaz, J Drobeniuc
1Hepatitis Branch, Division of Viral and Rickettsial Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA. yah5@cdc.gov
Background:
Reported rates of acute hepatitis B are high in many former Soviet Union republics and modes of transmission are not well defined.
Methods:
Two case-control studies were undertaken in Moldova to identify risk factors for acute hepatitis B in people aged 2-15 years (children) and > or =15 years (adults). Serologically confirmed acute hepatitis B cases occurring between 1 January 1994 and 30 August 30 1995, were matched on age, sex, and district of residence to three potential controls who were tested for hepatitis B markers to exclude the immune. Stratified odds ratios (SOR) were calculated using bivariate and multivariate methods.
Results:
In multivariate analysis, compared with the 175 controls, the 70 adult cases (mean age 25 years, 66% male) were more likely to report receiving injections in the 6 months before illness during a dental visit (SOR = 21; 95% CI: 3.7-120), a hospital visit (SOR = 35; 95% CI: 7.2-170), or a visit to the polyclinic (SOR = 13; 95% CI: 2.4-74). Among children, receiving injections during a hospital visit (SOR = 5.2; 95% CI: 1.2-23) was the only exposure reported significantly more often by the 19 cases (mean age 8 years, 68% male) compared with the 81 controls.
Conclusion:
These results, along with reported unsafe injection practices in Moldova, suggest that injections are a major source of hepatitis B virus transmission and highlight the importance of proper infection-control procedures in preventing transmission of blood-borne infections.
Insights
Unsafe injections are a primary driver of acute hepatitis B transmission in Moldova. Implementing proper infection control is crucial for preventing blood-borne infections like hepatitis B.
Area of Science:
- Infectious Diseases
- Hepatology
- Public Health
Background:
- High incidence of acute hepatitis B reported in former Soviet Union republics.
- Transmission routes for hepatitis B virus (HBV) remain inadequately defined in these regions.
Purpose of the Study:
- To identify risk factors for acute hepatitis B infection in children and adults in Moldova.
- To investigate the role of specific exposure events in HBV transmission.
Main Methods:
- Two case-control studies conducted in Moldova.
- Serologically confirmed acute hepatitis B cases matched with controls.
- Stratified odds ratios (SOR) calculated using bivariate and multivariate analyses.
Main Results:
- Adults with acute hepatitis B were significantly more likely to report recent injections from dental, hospital, or polyclinic visits.
- Children with acute hepatitis B were more likely to report injections during hospital visits.
- Multivariate analysis identified specific healthcare settings associated with increased risk.
Conclusions:
- Injections administered in healthcare settings appear to be a major source of hepatitis B virus transmission in Moldova.
- Highlights the critical need for enhanced infection-control practices in healthcare facilities.
- Emphasizes the importance of preventing blood-borne infections through improved injection safety.
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