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Updated: Dec 2, 2025

Author Spotlight: Advancements and Challenges in Hepatitis B Virus Detection
Published on: December 15, 2023
Frequency of Occult Hepatitis B Virus (HBV) in Chronic Hepatitis C Patients
Waquaruddin Ahmed1, Ijaz Hayder1, Shaimuna Fareeha Sajjad1
1Department of Gastroenterology and Hepatology, Pakistan Health Research Council and Research Centre, JPMC, Karachi, Pakistan.
Insights
This study found no cases of occult Hepatitis B virus (HBV) infection among patients with chronic Hepatitis C virus (HCV) infection. Further research is needed to understand occult HBV prevalence in this population.
Area of Science:
- Hepatology
- Virology
- Infectious Diseases
Background:
- Occult Hepatitis B virus (HBV) infection is defined by the presence of HBV DNA in individuals negative for Hepatitis B surface antigen (HBsAg).
- Chronic Hepatitis C virus (HCV) infection is a significant global health concern, often co-existing with other viral hepatitis infections.
Purpose of the Study:
- To determine the prevalence of occult HBV infection in patients diagnosed with chronic HCV infection.
- To investigate the co-infection patterns of HBV and HCV in an outpatient setting.
Main Methods:
- A cross-sectional study was conducted over one year (May 2018-May 2019).
- Patients with confirmed chronic HCV RNA by PCR were recruited.
- Blood samples were tested for HBsAg; HBsAg-negative individuals were further tested for HBV DNA using real-time PCR.
Main Results:
- A total of 217 patients with chronic HCV infection were included.
- All 217 patients tested negative for both HBsAg and HBV DNA.
- No instances of occult HBV infection were detected in this cohort of chronic HCV patients.
Conclusions:
- Occult HBV infection was not detected in patients with chronic HCV infection seeking treatment in this study.
- The findings suggest a low prevalence or absence of occult HBV in this specific patient group.
- Further studies with larger cohorts and diverse populations are warranted to confirm these results.
Abstract:
Occult HBV is defined as the presence of HBV DNA in the liver tissue and / or HBV DNA in blood of people with negative HBsAg by currently available assays. The objective of the study was to determine the prevalence of occult HBV in chronic HCV patients. It was a cross-sectional study of one year duration including patients coming to the outpatient department with a positive HCV RNA by PCR from May 2018 to May 2019. Blood samples were taken to test HBsAg. Those cases who were HBsAg negative were checked for HBV DNA using real time PCR. A total of 217 cases were included in the study. Mean age was 41.3 + 14.61 years. All 217 cases of chronic HCV infection, which were positive for HCV RNA by PCR, were found to be negative for both HBsAg and HBV DNA. No occult HBV was detected in cases of chronic HCV infection seeking treatment. Key Words: Occult, Hepatitis B, Chronic hepatitis C.
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