Table 2. Prevalence and levels of antibody responses to PfMSP5 in the three cohorts.

	Ab responses against PfMSP5
	Dielmo Year 2002	Ndiop Year 2002	Ndiop Year 2000
Mean OD/median-[range]	0.41/0.32[0.01–1.7]	0.27/0.16 [0.01–1.46]	0.38/0.21 [0.01–2.63]
Mean ODratio/median-[range]	4.3/3.3 [1–17.1]	4.3/2.7 [1–22.8]	3.9/2.4 [1–23.2]
Prevalence of responders*	74%	65%	60%
Prevalence in younger individuals**	79% (n = 19)	58% (n = 85)	49% (n = 80)
Prevalence in older individuals	74% (n = 167)	70% (n = 136)	70% (n = 124)

*Individuals with positive IgG response =  ODratio>2 ie > OD of naive control + 2SD.

**Younger individuals : in Dielmo ie <7 years old; in Ndiop ie <15 years old.