Anti-CMV Cellular Immunity Quantification Using an IGRA Test in Kidney Transplant récipients and Hemodialysis Patients, Comparison to Control Patients

Inclusion Criteria : * For all patients : * to be seropositive for CMV * to not be opposed to the study * For kidney transplant recipients : * to have received a kidney graft for over 1 year * to have received an induction therapy at transplantation time by anti-lymphocytes antibodies and steroids * to be currently receiving immunosuppressive therapy by calcineurins inhibitors (tacrolimus or cyclosporine), mycophenolic acid with or without steroids * to not suffer from another cause of immunosuppression * For hemodialysis patients : * to be treated by hemodialysis for end stage renal disease * without prior solid organ transplant history * to not suffer from another cause of immunosuppression * For control patients : * with normal kidney function (estimated GFR \> 90 ml/min) * to not suffer from another cause of immunosuppression Exclusion Criteria : * patient under guardianship or deprived of his liberty