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 artery aneurysm. 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 BCG scar or thrombocytosis in infants shouldalert the clinicians of KD.