Introduction. The association of occult hepatitis B infection (OBI) and chronic viral hepatitis C (HVCC) has a worldwide prevalence of 1-15%, being another underestimated one in children. Material and methods. The data of a patient diagnosed with OBI associated with HVCC with minimal HCV viremia, based on the outpatient medical record F112/e, are presented. Results. Boy aged 2 years, 10 months, diagnosed with HVCC at the age of 2 years and referred to a pediatric gastroenterologist for consideration of antiviral treatment. The child's mother is under surveillance with chronic HBV infection for more than 3 years. At birth, the child was vaccinated in the first 24 hours with anti-HVB1 with the concomitant administration of anti-HVB-specific immunoglobulin Ig, followed by 3 doses of antiHVB vaccines. At the age of 5 months, the child underwent surgery for capillary-cavernous hemangioma at the base of the scrotum. The immunoserological examination of the child at the age of 2 showed cytolysis of the first degree with an increase of ALT and AST 2 times compared to the reference values, HBsAg (-), anti-HBcor summary (+), anti-HBcor IgM (-), anti-HBs (+), HBe Ag (-), anti-HBe (-), negative quantitative HBV DNA, summary anti-HCV (+), positive HCV RNA 409 367 IU/ml. The diagnosis of OBI seropositive form ("occult" phase) and HVCC genotype 1b with minimal viremia was established, being eligible for antiviral treatment. Conclusions. The concurrent evolution of HBV and HCV infection in children requires complex evaluation with the determination of the priority viremia induced by the 2 viruses and the correct selection of the antiviral treatment scheme.