Assessment of Aedes aegypti Pupal Productivity during the Dengue Vector Control Program in a Costal Urban Centre of São Paulo State, Brazil

Table 4

Frequency distribution of positive containers, and total number of Aedes  aegypti pupae collected in different categories of larval container habitats from São Sebastião, State of São Paulo, Brazil (October 2002–April 2003, and October 2003–April 2004).

Container category	Positive containers		Pupal productivity
	Frequency	%	Count	%	Mean pupae per container
Fixed
Bromeliads/plant Hollows	110	13.8	92	4.0	0.8
Boats/ships	64	8.0	292	12.6	4.6
Water tanks	52	6.5	62	2.7	1.2
Drains	51	6.4	148	6.4	2.9
Sanitation fixtures	48	6.0	41	1.8	0.9
Concrete structures	29	3.6	166	7.1	5.7
Subtotal fixed	354	44.4	801	34.5	2.3
Removable
Plastic items	190	23.8	499	21.5	2.6
Metallic items	103	12.9	764	32.9	7.4
Vases	88	11.0	148	6.4	1.7
Tyres	25	3.1	45	1.9	1.8
Aquatic plants	20	2.5	23	1.0	1.2
Glass items	16	2.0	20	0.9	1.3
Other	2	0.3	23	1.0	11.5
Subtotal removable	444	55.6	1,522	65.5	3.4
Total	798	100.0	2,323	100.0	2.9