HUMAN HERPESVIRUS-8 SEROCONVERSIONS AFTER RENAL TRANSPLANTATION1

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Abstract
Human herpesvirus-8 (HHV-8) is a new human herpesvirus that is clearly associated with Kaposi's sarcoma (KS). A previous study has reported that the prevalence of KS in a cohort of renal transplant recipients with previous HHV-8 infection was 28% and two other studies have shown that KS can be linked to HHV-8 seroconversion after graft. The aim of this study was to evaluate the HHV-8 seroconversion rate in a cohort of renal allograft recipients in Paris.Two hundred eighty-seven patients who were HHV-8 seronegative before renal transplantation were tested for HHV-8 antibodies by an immunofluorescence assay 12 months after transplantation.Of the 287 patients, 6 (2.09%) seroconverted after renal transplantation. None of these 6 patients developed KS within 3 years of the first HHV-8 positive serum. None of the clinical manifestations that could be associated with HHV-8 primary infection were observed during the seroconversion.Our results demonstrated that HHV-8 seroconversion can be observed even in a low HHV-8 prevalence area and confirmed the need to perform systematic screening for HHV-8 antibodies in renal graft donors and recipients.