Table 4.

Intermediate-avidity results in sera collected from 9- to 15-month-old infants within 3 weeks of their first dose of a measles virus-containing vaccine

Sample	No. of days after vaccination	etAI%	Result
1	0a	71	High
	6 to 22	55	Intermediate
	28 to 45	27	Low
	>120	64	Intermediate
2	0	78	High
	6 to 22	54	Intermediate
	28 to 45	44	Intermediate
	>120	74	High
3	0	NTb	NT
	6 to 22	64	Intermediate
	28 to 45	78	High
4	0	NT	NT
	14	51	Intermediate

^aPrevaccine collection.

^bNT, not tested; negative IgG result.