Frequent blood feeding enables insecticide-treated nets to reduce transmission by mosquitoes that bite predominately outdoors

Table 1 The estimated malaria transmission intensity attributable to Anopheles farauti in Haleta village, Central Province, The Solomon Islands

Time	Sporozoite rate (n positive)				All night biting rate (b/p/18.00–06.00 h)^a	Daily EIR (ib/p/d)^b	Annual EIR (ib/p/y)^c
Time	Total tested	P. falciparum	P. vivax	Overall	All night biting rate (b/p/18.00–06.00 h)^a	Daily EIR (ib/p/d)^b	Annual EIR (ib/p/y)^c
Nov 2011	207	0.0000 (0)	0.0000 (0)	0.0000 (0)	15.16	0.000
2012	2062	0.0000 (0)	0.0005 (1)	0.0005 (1)	13.98	0.007	2.5
2013	1907	0.0026 (5)	0.0052 (10)	0.0073 (14)^d	13.33	0.098	35.7
Jan–Feb 2014	531	0.0038 (2)	0.0113 (6)	0.0132 (7)^d	27.90	0.368
Overall	4707	0.0015 (6)	0.0036 (17)	0.0047 (22)^d	14.81	0.069	25.3

^aAll night biting rate was calculated with a calibration factor of 93 % biting before midnight. This figure was calculated from the biting profile presented in the first section of this paper
^bDaily EIR [infective bites per person per day (ib/p/d)] = sporozoite rate × biting rate (18.00–06.00 h)
^cAnnual EIR [infective bites per person per year (ib/p/y)] = sporozoite rate × biting rate (18.00–06.00 h) × 365
^dThese sample periods include mixed P. falciparum and P. vivax infections (one from 2013, one from Jan–Feb 2014 and thus two mixed infections overall)

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