Criterion	Definition
Minimum frequency of sore throat episodes	At least seven episodes in the previous year, at least five episodes in each of the previous two years, or at least three episodes in each of the previous three years
Clinical features	Sore throat plus at least one of the following features qualifies as a counting episode:
		Temperature of greater than 100.9°F (38.3°C)
		Cervical adenopathy (tender lymph nodes or lymph node size greater than 2 cm)
		Tonsillar exudate
		Culture positive for group A β-hemolytic streptococcus
Treatment	Antibiotics administered in the conventional dosage for proved or suspected streptococcal episodes
Documentation	Each episode of throat infection and its qualifying features substantiated by contemporaneous notation in a medical record
	If the episodes are not fully documented, subsequent observance by the physician of two episodes of throat infection with patterns of frequency and clinical features consistent with the initial history*