Atypical Kawasaki Disease Presenting as Acute Kidney Injury in a Patient with Influenza B Virus Infection

Influenza virus infection is a common respiratory disease in children that rarely results in renal complications, although acute kidney injury (AKI) occurred frequently in severely ill patients during the 2009 H1N1 influenza A virus pandemic [1-4]. Also, AKI due to influenza B virus infection remains uncommon [5,6]. Kawasaki disease (KD) occurs infrequently associated with influenza A virus H1N1 infection [7], but it has not been reported with influenza B, even during the recent epidemics [6]. Recently, an epidemiologic study has documented the rare association of KD with influenza A and B virus [8]. Although renal complications of KD occur occasionally [9-11], a simultaneous KD and AKI concomitant with an influenza virus infection have not been reported in the literature. Here, we report a 13-yearold girl with an influenza B virus infection who presented with AKI and was subsequently diagnosed with atypical KD. This is the first case of atypical KD with AKI occurring in association with an influenza B virus infection.