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Hepatitis C virus type I(1a) in northern China
1Department of Medicine, St. Mary's Hospital Medical School, Imperial College of Science, Technology and Medicine, London, United Kingdom.
Insights
This study analyzed hepatitis C virus (HCV) genotypes in Jilin, China. Genotype I (1a), previously unreported, was identified alongside genotypes II (1b) and III (2a).
Area of Science:
- Virology
- Hepatology
- Infectious Diseases
Background:
- Hepatitis C virus (HCV) infection is a significant global health concern.
- Understanding HCV genotypes is crucial for effective treatment and prevention strategies.
- Limited data exists on HCV genotypes in Northwestern China.
Purpose of the Study:
- To characterize HCV genotypes in patients from Jilin province, China.
- To investigate the concordance of different diagnostic assays for HCV detection.
- To identify novel or previously unreported HCV genotypes in the region.
Main Methods:
- Analysis of 24 patients with confirmed HCV antibody from Jilin province.
- Utilized second-generation HCV antibody ELISA, immunoblot assay-2 (RIBA-2), and serum HCV RNA detection via RT-PCR.
- Employed direct sequence-genotyping for precise genotype determination.
Main Results:
- High concordance observed between ELISA, RIBA-2, and RT-PCR for HCV detection.
- Identified HCV genotypes I (1a) in 20.8%, II (1b) in 66.7%, and III (2a) in 12.5% of cases.
- Genotype I (1a) represents a novel finding in China; imported blood products are a potential, though unconfirmed, source.
Conclusions:
- The study successfully identified and genotyped HCV in a Chinese cohort.
- Genotype I (1a) is newly reported in China, indicating evolving HCV epidemiology.
- Established diagnostic methods show good reliability for HCV detection and genotyping.
Abstract:
Twenty-four patients with hepatitis C virus (HCV) antibody from the Chinese North Western province of Jilin were further analysed by the immunoblot assay-2 (RIBA-2), reverse transcription-polymerase chain reaction (RT-PCR) for serum HCV RNA detection, and direct sequence-genotyping. Good concordance was found between the original second generation HCV antibody ELISA, RIBA-2, and serum HCV RNA. The occurrence of genotype I (1a), a genotype not previously reported in China, is described in 5(20.8%) of 24 cases, in association with genotypes II(1b) and III(2a) which were found in 16(66.7%) and 3(12.5%) of 24 cases, respectively. Imported blood products were unlikely to be the source of infection with genotype I (1a) but could not be definitively ruled out.