Dramatic decreases of malaria transmission intensities in Ifakara, south-eastern Tanzania since early 2000s

Malaria Journal

Table 3 Mean numbers of mosquitoes of different species caught each night in the four adjacent wards of Ifakara, relative to the numbers caught in Ifakara Mjini (the main town centre)

Species	Wards	Mosquito catches indoors				Mosquito catches outdoors
Species	Wards	Total no. mosquitoes	Adjusted means [UC–LC]	RR [UC–LC]	P-values	Total no. mosquitoes	Adjusted means [UC–LC]	RR [UC–LC]	P-values
Anopheles arabiensis	Ifakara Mjini	154	0.42 [0.25–0.70]	1	N/A	269	0.29 [0.17–0.51]	1	N/A
	Katindiuka	2337	5.81 [3.53–9.56]	13.8 [6.9–27.6]	< 0.001	2318	3.28 [1.98–5.42]	11.2 [5.33–23.7]	< 0.001
	Lipangalala	254	0.16 [0.09–0.30]	0.4 [0.2–0.8]	< 0.05	531	0.10 [0.05–0.19]	0.3 [0.14–0.79]	< 0.05
	Mlabani	580	0.22 [0.12–0.39]	0.5 [0.2–1.1]	0.084	939	0.31 [0.18–0.53]	1.1 [0.48–2.29]	0.898
	Viwanja Sitini	225	0.64 [0.38–1.07]	1.5 [0.7–3.1]	0.257	188	0.54 [0.32–0.92]	1.9 [0.87–4.00]	0.11
Anopheles funestus	Ifakara Mjini	7	0.002 [0–0.02]	1	N/A	10	0.02 [0.01–0.05]	1	N/A
	Katindiuka	189	0.49 [0.25–0.97]	212.7^a [24.1–1881]	< 0.001	116	0.10 [0.05–0.18]	4.5 [1.68–14.78]	< 0.001
	Lipangalala	35	0.03 [0.01–0.10]	14.5^a [1.6–132.0]	< 0.05	4	0 [0–0]	0 [0–0]	0.802
	Mlabani	16	0.01 [0.003–0.04]	5.0 [0.5–53.9]	0.184	19	0.03 [0.01–0.07]	1.4 [0.39–4.83]	0.627
	Viwanja Sitini	1	0.002 [0–0.02]	1.1 [0.1–21.2]	0.942	3	0.01 [0.002–0.03]	0.4 [0.07–2.24]	0.298

The catch densities are also illustrated in maps in Fig. 6
^aExcessively dispersed data not tractable by the generalized linear mixed models, mostly because of very low-densities of An. funestus mosquitoes

ISSN: 1475-2875