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 categoryPositive containers Pupal productivity
Frequency%Count%Mean pupae per container

Fixed
Bromeliads/plant Hollows11013.8924.00.8
Boats/ships648.029212.64.6
Water tanks526.5622.71.2
Drains 516.41486.42.9
Sanitation fixtures486.0411.80.9
Concrete structures293.61667.15.7

Subtotal fixed35444.480134.52.3

Removable
Plastic items19023.849921.52.6
Metallic items10312.976432.97.4
Vases8811.01486.41.7
Tyres253.1451.91.8
Aquatic plants202.5231.01.2
Glass items162.0200.91.3
Other20.3231.011.5

Subtotal removable444 55.6 1,522 65.5 3.4

Total798100.02,323100.02.9