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The prevalence and the clinical course of hepatitis C virus (HCV) infections were studied in 23 HIV-1-infected children, who were born to 22 mothers with HIV-1/HCV coinfection. During the follow-up only two children (8.7%) showed persistent anti-HCV antibodies and circulating HCV RNA. Both children, who were aged 10 and 10.6 years respectively at the end of follow-up, had chronically-evolving liver disease and autoimmune thrombocytopenia but no signs of progressive HIV disease. Based on our experience, vertically-acquired HIV-1/HCV coinfection is less frequent than is generally reported and may be associated with the development of chronic thrombocytopenia in addition to liver disease. Moreover, perinatal HIV-1/HCV coinfection appears to be associated with a slow progression of HIV disease.

GBV-C/HGV RNA and anti-E2 were detected in 13 (35%) and 12 (32%) sera, respectively. Contemporary presence of both markers was found in one patient. GBV-C/HGV exposure was found in 24 patients (64.8%). Mean levels of liver enzymes were similar in both exposed and unexposed GBV-C/HGV groups. 33 out of 35 patients showed no change in GBV-C/HGV RNA and anti-E2 status in sera taken 6 months apart. The rate of persistent infection was 92.3% and the anti-E2 seroconversion rate was 23% for sera taken at least 6 months apart. The temporal overlap between anti-E2 seroconversion and loss of detectable GBV-C/HGV RNA may last more than 6 months.

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