Current American Heart Association guidelines recommend initiating evaluation for incomplete KD when inflammatory markers such as C-reactive protein (CRP) exceed 30 mg/L or erythrocyte sedimentation rate (ESR) exceeds 40 mm/h, particularly when these values persist beyond 3–4 days in the absence of an identifiable infection, even when few or no principal clinical features are present (14). This evidence concerns the gene CRP and infection.