Achieving high coverage of larval-stage mosquito surveillance: challenges for a community-based mosquito control programme in urban Dar es Salaam, Tanzania

Table 4 Detection sensitivity of larval stages in different aquatic mosquito larval habitat types and categories by CORPs

		Anophelines			Culicines
		Number of habitats found with larvae by ^a		Proportion detected by CORPs (%)	Number of habitats found with larvae by ^a		Proportion detected by CORPs (%)
		CORPs	Investigator		CORPs	Investigator
Natural Habitats	Marsh/swampy areas	5	24	20.8	10	13	76.9
	Riverbeds	1	2	50.0	18	23	78.3
	Seepages	0	1	0.0	1	2	50.0
	*Subtotal*	6	27	22.2	29	38	76.3
Agricultural artificial habitats
	Rice paddies	0	2	0.0	0	1	0.0
	Matuta	4	9	44.4	7	9	77.8
	Other agriculture	1	5	20.0	0	1	0.0
	*Subtotal*	5	16	31.3	7	11	63.6
Non-agricultural artificial habitats
	Tyre tracks/puddles	1	14	7.1	15	21	71.4
	Drains	7	14	50.0	122	165	73.9
	Construction sites	9	24	37.5	68	91	74.7
	water storage containers	0	0	0.0	14	32	43.8
	Ponds	1	2	50.0	6	6	100.0
	*Subtotal*	18	54	33.3	225	315	71.4
	Total	29	97	29.9	261	364	71.7

^aout of those habitats that were recorded as wet by the CORPs during their routine surveys

ISSN: 1475-2875