TABLE 3.

PCR results for sera from 102 healthy control subjects ages 2, 12, and 24 months by NP pneumococcal carriage

Age group (mo)	No. of subjects tested/no. positive (%)
	NP swab culture negative	NP swab culture positive
2 (n = 30)	0/15 (0)	4/15 (27)
12 (n = 42)	5/22 (23)	5/20 (25)
24 (n = 30)	3/15 (20)	7/15 (47)
All (n = 102)	8/52 (15)a	16/50 (32)a

^aP = 0.08.