[Infections after kidney transplantation].

Immunosuppressed kidney transplant recipients are at risk for a variety of infectious complications and more than half of them suffered from this complication in the early post-transplant period. Despite the fact that the long term risk of serious infectious complications in the early postoperative period decreased, remain the infection the most frequent cause of morbidity in the first 6 months after transplant. It is important to realize that the clinical manifestations of infection in the compromised host are variable and often atypical. In the later period, infections that affect the kidney graft become clinically important, and some of them occur only in immunosuppressed patients. Here we will discuss polyomavirus nephropathy which represents the most important and most frequent viral disease of renal allografts.