Table 1.

Characteristics of patients included in the study, Madagascar, 2008-2010

Characteristics	Study sites				P
	High transmission		Low transmission
	Ampasimanjeva	Vohimasy	Ampasimpotsy	Andasibe
Cohort population	281	258	299	235
Mean age (months)	28.6	26.5	30.1	31.5	0.009
Sex ratio (M/F)	1	0.87	0.86	0.94	NS
No. of febrile episodes	309	118	63	53
PCR + (%)	56%	58%	33%	30%	< 0.0001
Microscopy + (%)	37%	43%	32%	25%	NS