Storm drains as larval development and adult resting sites for Aedes aegypti and Aedes albopictus in Salvador, Brazil

Table 3 Factors associated with Aedes aegypti (adults or immatures) presence in 118 storm drains with accumulated water, Salvador, Brazil, 2015

Characteristic	No. with available data	No. with Aedes aegypti (%)	Crude OR (95 % CI)	Adjusted OR (95 % CI)
Organic matter
No organic matter	22	3 (13.6)	1
With organic matter	96	15 (15.6)	1.2 (0.3–4.5)
Shade
No shade	64	9 (14.0)	1
Indirect shade	37	5 (13.5)	1.0 (0.3–3.1)
Direct shade	17	4 (23.5)	1.9 (0.5–7.1)
Turbidity of water^a
No turbid	61	7 (11.5)	1
Turbid	47	11 (23.4)	2.4 (0.8–6.7)
Water odor^a
No odor	51	10 (19.6)	1
With odor	59	8 (13.6)	0.6 (0.2–1.8)
Non-Aedes mosquitoes^b
Absent	87	5 (5.8)	1	1
Present	31	13 (41.8)	11.8 (3.8–37.4)	7.8 (2.3–25.8)
Water volume^a
≤ 40 l	57	14 (24.6)	1
> 40 l	58	4 (6.9)	0.2 (0.1–0.7)
Precipitation during the previous 7 days
≤ 50 mm	53	15 (28.3)	1	1
> 50 mm	65	3 (4.6)	0.1 (0.0–0.5)	0.2 (0.1–0.8)

^aData on water turbidity, odor and volume were not collected for 10, 10 and 3 storm drains, respectively
^bNon-Aedes mosquitoes: includes adult mosquitoes and immatures

ISSN: 1756-3305