Composition of Anopheles mosquitoes, their blood-meal hosts, and Plasmodium falciparum infection rates in three islands with disparate bed net coverage in Lake Victoria, Kenya

Table 4 Plasmodium falciparum infection among engorged field collected anophelines

Study area	Mosquito species	n	HF	NHF	MF	UF	nPfal (%)	ERF (95% CI)
Mageta	An. gambiae s.s.	310	23	4	1	2	30 (9.68)	0.10 (0.067, 0.13)
	An. arabiensis	40	3	0	0	1	4 (10.00)	0.11 (0.032, 0.21)
	An. funestus s.s.	16	0	0	0	0	0 (0.00)	0.04 (3.9e−06, 0.16)
	An. coustani	8	1	0	0	1	2 (25.00)	0.29 (0.055, 0.57)
	Total	374	27	4	1	4	36 (9.63)
Magare	An. gambiae s.s.	7	1	0	0	1	2 (28.57)	0.32 (0.059, 0.62)
	An. arabiensis	2	0	0	0	1	1 (50.00)	0.50 (0.085, 0.89)
	An. funestus s.s.	8	0	0	0	0	0 (0.00)	0.07 (5.4e−07, 0.28)
	An. coustani	8	0	1	0	0	1 (12.50)	0.18 (0.011, 0.44)
	Total	25	1	1	0	2	4 (16.00)
Ngodhe	An. gambiae s.s.	3	0	0	0	0	0 (0.00)	0.16 (5.4e−07, 0.53)
	An. arabiensis	9	1	0	0	0	1 (11.11)	0.16 (0.0068, 0.39)
	An. funestus s.s.	5	0	0	0	0	0 (0.00)	0.11 (3.4e−06, 0.40)
	Total	17	1	0	0	0	1 (5.88)
Total (%)		416	29 (6.97)	6 (1.44)	1 (0.24)	5 (1.20)	41 (9.86)

n: number of engorged anophelines analysed; nPfal: overall number of engorged anophelines with P. falciparum infection confirmed by 18S and cyt b markers; HF: human-fed engorged anophelines with P. falciparum infection; NHF: non-human fed engorged anophelines with P. falciparum infection; MF: mixed-fed (human and cow) engorged anophelines with P. falciparum infection; UF: unsuccessfully identified blood-meal sources of engorged anophelines with P. falciparum infection; ERF: estimated relative frequency of success; CI: Credibility interval

ISSN: 1475-2875