Changes in vector species composition and current vector biology and behaviour will favour malaria elimination in Santa Isabel Province, Solomon Islands

Table 4 The entomological estimation of malaria transmission intensity attributable to Anopheles farauti on Popoheo village and Anopheles solomonis on Kolosori village, Santa Isabel province, Solomon Islands during October of 2009.

Entomological parameters of mosquito population	Popoheo *Anopheles farauti*	Kolosori *Anopheles solomonis*
Sporozoite prevalence (S; %)	0.00129 (n = 775)	0.0000 (n = 287)
Biting rate (B; b/p/n)
Indoor	12.4	1.6
Outdoor	13.4	8.0
Overall	12.9	5.1
Entomological inoculation rate ib/p/y	6.07	<0.001
Endophagy¹ Proportion indoors ± se	0.46 ± 0.04 (n = 775)	0.21 ± 0.06 (n = 287)
Nocturnal biting² Proportion 10 pm-5 am ± se	0.03 ± 0.01 (n = 775)	0.02 ± 0.01 (n = 287)
Proportion indoor biting ³ (π_i)	0.546	0.069

Where S = no. of sporozoite positive mosquitoes/no. of mosquitoes tested, B = no. of mosquitoes collected/no. of nights/no. of collectors, EIR = S × B_overall × 365. Endophagy was the proportion of mosquitoes caught indoors (calculated as I_{6 pm}→_{5 am}/(I_{6 pm}→_{5 am} + O_{6 pm}→_{5 am}, where I and O = the total number of mosquitoes caught indoors and outdoor respectively between 6 pm and 5 am); nocturnal biting was the proportion of mosquitoes caught during hours (10 pm-5 am) when most people are asleep (calculated as I_{9 pm}→_{4 am} + O_{9 pm}→_{4 am})/(I_{6 pm}→_{5 am} + O_{6 pm}→_{5 am} where I and O = the total number of mosquitoes caught indoors and outdoor respectively at the time indicated); and π_i the proportion of the vector population biting indoors adjusted for the location of the host either outdoors or indoors [12]

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