ArticleBMC infectious diseases2021
Estimating regional prevalence of chronic hepatitis C with a capture-recapture analysis.
Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe hepatitis C virus (HCV) infection is a candidate disease for micro-elimination. Accurate baseline HCV prevalence estimation is essential to monitor progress to micro-elimination but can be methodologically challenging in low-endemic regions like the Netherlands due to lack of disaggregated data by age or risk-groups on the number of chronic HCV patients (i.e. HCV RNA positive). This study estimates the number of patients that has had a chronic HCV infection (ever-chronic) in the Utrecht region of the Netherlands.
methodsIn the Utrecht province in the Netherlands, positive HCV tests from the period 2001-2015 from one diagnostic center and four hospital laboratories were collected. A two-source capture-recapture method was used to analyze the overlap between the two registries (with 92% HCV RNA and 8% HCV immunoblot confirmed infections) to obtain the number of ever-chronic HCV infections in the Utrecht region. The Utrecht region was defined as an area with a 25 km radius from the Utrecht city center. The current viremic HCV prevalence was calculated by taking into account the proportion of cured and deceased HCV patients from a local HCV retrieval (REACH) project.
resultsThe estimated number of ever-chronic HCV patients was 1245 (95% CI 1164-1326) and would indicate a prevalence of 0.10 (95% CI 0.09-0.10) in the Utrecht region. This is 30% (95% CI 21-38%) more than the number of known HCV patients in the records. The ever-chronic HCV prevalence was highest in the 1960-1969 age cohort (0.16; 95% CI 0.14-0.18). Since 50% of the HCV patients were cured or deceased in the REACH-project, the number of current viremic HCV patients was estimated at 623 individuals in the Utrecht region (prevalence 0.05%).
conclusionThe results of this study suggest a low ever-chronic and current HCV prevalence in the Utrecht area in the Netherlands, but other studies need to confirm this.
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