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Updated: Oct 2, 2026

A Protocol for Analyzing Hepatitis C Virus Replication
Published on: June 26, 2014
Clinical course of hepatitis C virus during the first decade of infection: cohort study
Helen E Harris1, Mary E Ramsay, Nick Andrews
1Public Health Laboratory Service Communicable Disease Surveillance Centre, London NW9 5EQ. hharris@phls.nhs.uk
Insights
Hepatitis C virus (HCV) infection did not significantly impact overall mortality within the first decade. However, infected individuals faced a higher risk of liver disease-related death, especially with excess alcohol consumption.
Area of Science:
- Hepatology
- Infectious Diseases
- Clinical Medicine
Background:
- Hepatitis C virus (HCV) is a significant global health concern.
- Understanding the long-term clinical course of HCV infection is crucial for patient management.
- The first decade of infection is a critical period for disease progression.
Purpose of the Study:
- To investigate the clinical outcomes of hepatitis C virus infection.
- To determine the impact of HCV on mortality and liver disease development.
- To analyze factors associated with liver disease progression in infected individuals.
Main Methods:
- A cohort study was conducted in the United Kingdom.
- 924 transfusion recipients with known HCV infection dates and 475 controls were analyzed.
- Clinical data, liver function, and survival rates were assessed over 10 years.
Main Results:
- All-cause mortality did not differ significantly between HCV-infected patients and controls.
- HCV patients showed a trend towards higher liver disease-related mortality, particularly with excess alcohol consumption.
- Abnormal liver function was observed in 37.2% of patients, with 13.9% reporting symptoms. Factors like HCV RNA positivity, older age at infection, and years since transfusion were associated with liver disease.
Conclusions:
- Hepatitis C virus infection had a limited impact on all-cause mortality in the initial decade.
- A higher risk of death from liver disease exists in HCV-infected individuals, influenced by alcohol intake.
- Liver biopsy revealed significant histological abnormalities, including cirrhosis, in a substantial proportion of patients.
Objective:
To determine the clinical course of hepatitis C virus in the first decade of infection in a group of patients who acquired their infections on a known date.
Design:
Cohort study.
Setting:
Clinical centres throughout the United Kingdom.
Participants:
924 transfusion recipients infected with the hepatitis C virus (HCV) traced during the HCV lookback programme and 475 transfusion recipients who tested negative for antibodies to HCV (controls).
Main Outcome Measures:
Clinical evidence of liver disease and survival after 10 years of infection.
Results:
All cause mortality was not significantly different between patients and controls (Cox's hazards ratio 1.41, 95% confidence interval 0.95 to 2.08). Patients were more likely to be certified with a death related to liver disease than were controls (12.84, 1.73 to 95.44), but although the risk of death directly from liver disease was higher in patients than controls this difference was not significant (5.78, 0.72 to 46.70). Forty per cent of the patients who died directly from liver disease were known to have consumed excess alcohol. Clinical follow up of 826 patients showed that liver function was abnormal in 307 (37.2%), and 115 (13.9%) reported physical signs or symptoms of liver disease. Factors associated with developing liver disease were testing positive for HCV ribonucleic acid (odds ratio 6.44, 2.67 to 15.48), having acquired infection when older (at age > or = 40 years; 1.80, 1.14 to 2.85), and years since transfusion (odds ratio 1.096 per year, 1.00 to 1.20). For patients with severe disease, sex was also significant (odds ratio for women 0.38, 0.17 to 0.88). Of the 362 patients who had undergone liver biopsy, 328 (91%) had abnormal histological results and 35 (10%) of these were cirrhotic.
Conclusions:
Hepatitis C virus infection did not have a great impact on all cause mortality in the first decade of infection. Infected patients were at increased risk of dying directly from liver disease, particularly if they consumed excess alcohol, but this difference was not statistically significant.
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