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Real-Time Polymerase Chain Reaction-Based Detection and Quantification of Hepatitis B Virus DNA
Published on: December 15, 2023
Prevalence and genotype distribution of hepatitis C virus among apparently healthy individuals in Mongolia: a
Oidov Baatarkhuu1, Do Young Kim, Sang Hoon Ahn
1Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
Insights
Hepatitis C virus (HCV) infection affects 11.0% of the apparently healthy Mongolian population, with genotype 1b being predominant. Urgent preventive and therapeutic strategies are needed for this HCV-endemic region.
Area of Science:
- Hepatology
- Infectious Diseases
- Public Health
Background:
- Hepatitis C virus (HCV) is a significant cause of liver disease in Mongolia.
- Nationwide prevalence data for HCV infection in Mongolia were previously unavailable.
- HCV contributes to liver cirrhosis and hepatocellular carcinoma (HCC).
Purpose of the Study:
- To determine the population-based prevalence of HCV infection in Mongolia.
- To investigate the distribution of HCV genotypes nationwide.
- To assess HCV infection in apparently healthy individuals.
Main Methods:
- A two-stage cluster random sampling method was used.
- Sera were collected from 1512 residents across Ulaanbaatar and 12 provinces.
- Anti-HCV antibodies were tested, followed by HCV RNA detection and genotyping for positive samples.
Main Results:
- The overall prevalence of anti-HCV antibodies was 15.6%, with 11.0% testing positive for HCV RNA.
- Hepatitis C virus genotype 1b was predominant, found in 98.8% of cases.
- HCV RNA prevalence increased with age, reaching 32.6% in individuals over 61 years old.
Conclusions:
- Approximately 11.0% of the apparently healthy Mongolian population harbors detectable HCV RNA.
- Hepatitis C virus genotype 1b is the most common strain in Mongolia.
- There is an urgent need for preventive and therapeutic interventions for chronic hepatitis C in Mongolia.
Background And Aims:
Hepatitis C virus (HCV) is one of the major causes of liver cirrhosis and hepatocellular carcinoma (HCC) in Mongolia. However, there are no data concerning nationwide prevalence of HCV infection in Mongolia. We intended to investigate the population-based prevalence of HCV infection and genotype distribution among 1512 apparently healthy individuals in this country.
Methods:
Between April 2003 and December 2005, sera from 1512 residents of Ulaanbaatar and 12 provinces were collected by two-stage cluster random sampling, and anti-HCV was tested. Anti-HCV-positive samples were tested for HCV RNA by reverse transcription polymerase chain reaction, and HCV genotype was determined.
Results:
The mean age of the subjects was 46.2+/-17.8 years, and 812 (53.7%) were male. Overall, the prevalence of anti-HCV was 15.6% (236/1512) and HCV RNA was detected in 167 subjects (11.0%), with the most common genotype being 1b (165/167, 98.8%). When the HCV RNA-positive subjects were categorized by decade of age, the prevalence in each age group was as follows: 2.5% in subjects =10 years of age, 4.5% in teens, 10.1% in 20's, 12.5% in 30's, 24.2% in 40's, 29.0% in 50's and 32.6% in subjects >/=61 years of age. The seroprevalence of anti-HCV in a risk group, nurses, was not significantly different from the general population in each decade of age (P>0.05).
Conclusions:
Approximately 11.0% of apparently healthy population had detectable HCV RNA in Mongolia, and the predominant genotype of HCV was 1b. Preventive and therapeutic strategies for chronic hepatitis C are urgently warranted in this HCV-endemic area.
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