{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T12:46:06Z","timestamp":1791290766333,"version":"4.3.0"},"reference-count":0,"publisher":"AVES YAYINCILIK A.\u015e.","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Turkish Journal of Gastroenterology"],"abstract":"<jats:p>Abstract Background\/Aims: The present study aimed to determine the changes in the epidemiology of hepatitis in recent years in an adult Turkish population. Materials and Methods: Overall, 852 patients with acute viral hepatitis from 17 centers were included in this study. Their sociodemographic characteristics, clinical courses, treatments, and laboratory findings were retrospectively analyzed. Results: The most commonly found microorganisms were the hepatitis B virus (55.2%) and hepatitis A virus (37.6%), and the types of acute viral hepatitis differed significantly according to the age group (p\u22640.001). The most frequently reported symptom was fatigue (73.7%), and the most common complications were cholecystitis (0.4%) and fulminant hepatitis (0.4%). The median hospital stay was 9 days (range 1-373). In total, 40.8% patients with acute hepatitis B virus developed immunity. Conclusion: In Turkey, there are significantly large adolescent and adult populations susceptible to acute viral hepatitis. Therefore, larger vaccination programs covering these age groups should be implemented. Cite this article as: Karacaer Z, Tosun S, Bat\u0131rel A, et al. Changes in acute viral hepatitis epidemiology in the Turkish adult population: A multicenter study. 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