Table 2 LF survey data for Nigerian villages and corresponding model-predicted Mf prevalence thresholds at ABR

Nigerian state	Village	Year	Total population^a	No. sampled	No. positive	Mf prevalence (%)	Mf breakpoint (design prevalence, 95% EP threshold at ABR)
Nasarwa	Gbuwhen^b	2001	1503	508	19	3.7	0.014
		2004		446	8	1.8
		2005		286	1	0.3
		2006		183	1	0.5
		2007		196	0	0.0
		2008		127	0	0.0
		2009		175	0	0.0
	Maiganga^b	2001	431	486^c	23	4.7	0.012
		2005		169	5	3.0
		2006		126	7	5.6
		2007		158	1	0.6
		2008		109	2	1.8
		2009		152	1	0.7
Plateau	Dokan Tofa	2002^d	2677	419	21	5.0	0.016
		2007		151	2	1.3
		2008		158	0	0.0
		2009		223	1	0.4
	Gwamlar	2002^d	6052	494	33	6.7	0.017
		2006		240	29	12.1
		2007		128	2	1.6
		2008		100	5	5.0
		2009		143	7	4.9
	Lankan^b	2001	2119	274	9	3.3	0.012
		2004		365	27	7.4
		2005		243	11	4.5
		2006		81	2	2.5
		2007		117	2	1.7
		2008		173	7	4.0
		2009		201	0	0.0
	Piapung	2002^d	2068	403	40	9.9	0.016
		2007		187	18	9.6
		2009		291	6	2.1
	Seri^b	2003	1207	527	56	10.6	0.012
		2005		321	5	1.6
		2006		157	2	1.3
		2007		133	1	0.8
		2008		110	3	2.7
		2009		258	0	0.0

^aTotal population estimate calculated by dividing the 2009 eligible population given in Richards et al.³⁰ by the fraction of the population eligible for treatment. We assume the eligible population is equal to the population of age greater than 5 years, which was calculated to be 0.8125 in Nigeria
^bDenotes a village where no pre-intervention data were available so baseline conditions were hindcasted by fitting the model to post-intervention survey data
^cAs the sample size was greater than the estimated population size, the entire population was considered to have been sampled
^dPre-intervention survey
Although both Culex and Anopheles mosquitoes are present in this region, Anopheles is the primary vector responsible for transmission³⁰

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