Case Definition

For epidemiologic surveillance, CDC defines a case of KD as illness in a patient with fever of 5 or more days duration (or fever until the date of administration of intravenous immunoglobulin if it is given before the fifth day of fever), and the presence of at least 4 of the following 5 clinical signs:

• Rash
• Cervical lymphadenopathy (at least 1.5 cm in diameter)
• Bilateral conjunctival injection
• Oral mucosal changes
• Peripheral extremity changes

Patients whose illness does not meet the above KD case definition but who have fever and coronary artery abnormalities are classified as having atypical or incomplete KD.