Table 2. Proportion of HEU and HUU children with positive IgG responses to two or more P. falciparum blood stage antigens at different ages.

	Positive IgG responses to 2 or more antigens
Age a	HEU		HUU		p value c
	n b	%	n	%
6 d	2	6.45	9	33.3	0.016*
12 e	3	12.0	8	32.0	0.17
18 f	6	20.7	6	23.1	0.83
Total	11	12.9	23	29.5	0.012*

^aAge in Months

^b Number of positive responders to two or more antigens

^c P value determined by Fisher’s exact test for the comparison of the proportion of positive IgG responses to two or more antigens

^d Number of samples at 6 months of age: HEU (n = 31) and HUU (n = 27)

^e Number of samples at 12 months of age: HEU (n = 25) and HUU (n = 25)

^f Number of samples at 6 months of age: HEU (n = 29) and HUU (n = 26)

* Statistically significant difference at alpha level of 0.05