Association of treated and untreated chronic hepatitis C with the incidence of active tuberculosis disease: a population-based cohort study.

alexandrossfakianakis shared this article with you from Inoreader Association of treated and untreated chronic hepatitis C with the incidence of active tuberculosis disease: a population-based cohort study. via Clinical Infectious Diseases Advance Access Abstract Background Hepatitis C virus (HCV) infection causes dysregulation and suppression of immune pathways involved in the control of tuberculosis (TB) infection. However, data on the role of chronic hepatitis C as a risk factor for active TB are lacking. We sought to evaluate the association between HCV infection and the development of active TB. Methods We conducted a cohort study in Georgia among adults tested for HCV antibodies (January 2015 – September 2o2o) and followed longitudinally for the development of newly diagnosed active TB. Data were obtained from the Georgian National programs of hepatitis C and TB. The exposures of interest were untreated and treated HCV infection. Cox proportional hazards model was used to calculate adjusted hazards ratios. Results A total of 1,828,808 adults were included (median follow-up time: 26 months, IQR: 13-39 months). Active TB was diagnosed in 3,163 (0.17%) individuals after a median of 6 months follow-up (IQR: 1-18 months). The incidence rate per 100,000 person-years was 296 among persons with untreated HCV infection, 109 among those with treated HCV infection, and 65 among HCV-negative persons. In multivariable analysis, both untreated (aHR = 2.9, 95%CI: 2.4-3.4) and treated (aHR = 1.6, 95%CI: 1.4-2.0) HCV infection were associated with a higher hazard of active TB, compared to HCV-negative persons. Conclusions Adults with HCV infection, particularly untreated i ndividuals, were at higher risk of developing active TB disease. Screening for latent TB infection and active TB disease should be part of clinical evaluation of people with HCV infection, especially in high TB burden areas. View on Web

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