Table 1.

Prevalence and mean antibody levels measured in sequential samples from 48 children in Kedougou years 2010 and 2011

Antigen tested	May 2010	November 2010	May 2011	November 2011	Overall
No individuals	No = 47	N = 46	N = 47	N = 48	N = 188
Ag MSP1
Mean OD [min–max]	0.57 [0–1.93]	0.62 [0–1.93]	0.47 [0–1.36]	0.82 [0–2.25]	0.52 [0–2.25]
P. vivax
Mean OD ratio [min–max]	2.6 [1–7.1]	2.9 [1–6.4]	2.2 [1–4.5]	3.7 [1–7.2]	2.9 [1–7.2]
No positive (prevalence)	40%	41%	25%	31%	53%
Pf MSP1p19
Mean OD [min–max]	0.11 [0–0.98]	0.21 [0–2.10]	0.10 [0–1.19]	0.30 [0–2.14]	0.18 [0–2.14]
Mean OD ratio [min–max]	2.5 [1–16.7]	4.0 [1–34.7]	2.3 [1–20.0]	5.4 [1–33.8]	3.5 [1–33.8]
Prevalence	43%	38%	23%	46%	61%
Ag SE 07_03
Mean OD [min–max]	0.58 [0–2.45]	0.65 [0–2.41]	0.48 [0–2.39]	0.82 [0–2.59]	0.63 [0–2.59]
Mean OD ratio [min–max]	2.5 [1–10.5]	2.8 [1–10.4]	2.2 [1–9.6]	3.5 [1–12.3]	2.8 [1–12.3]
No positive (prevalence)	45%	37%	28%	46%	63%