Kawasaki disease (KD) is an acute systemic vasculitisusually affecting children <5 years old. We report a 44-dayold baby who had persistent fever despite being onantibiotics for presumed sepsis. Erythema of BacillusCalmette-Guerin (BCG) scar and thrombocytosis were notedon day-2 of illness. Diagnosis of incomplete KD was madeon the 10th day of illness. Her fever resolved withintravenous immunoglobulin, but echocardiogram revealedcoronary arteryaneurysm. High index of suspicion isrequired to diagnose KD in infants ≤3 months since it is rare and commonly presents with incomplete clinical features.The presence of unexplained fever for ≥5 days witherythema of BCGscar or thrombocytosis in infants shouldalert the clinicians of KD.