Table 2 Assessment of vectors distribution and abundance according to ecological factors

Seasons

 Dry

1432 (33)

87.8

1.0 (0–5.6)

Z = 837.5, P = 0.47

0.1

0 (0–0)

Z = 706, P = 0.3

 Rain

2919 (67)

179.2

0.5 (0–3.5)

3.1

0 (0–0)

Access to water

 Rain

2358 (33)

131.2

0.6 (0–6.8)

H = 2.36, df = 3, P = 0.5

0

0 (0–0)

H = 455, df = 3, P < 0.01

 Tap

2105 (29)

108.4

2.1 (0.4–4.7)

3

0 (0–0)

 River

2551 (35)

143.2

0.4 (0–5.9)

0

0 (0–0)

 Wells

215 (3)

13.4

0.0 (0–3.7)

0

0 (0–0)

Vegetation type

 Herbaceous

2003 (41)

102

0.8 (0–4.4)

H = 21, df = 3, P < 0.001

3

0 (0–0)

H = 580, df = 3, P < 0.04

 Plantation

1871 (38)

100.7

9.8 (8–17)

0

0 (0–0)

 Tropical forest

715 (15)

28.5

0.1 (0–3.3)

0

0 (0–0)

 Urban forest

281 (5.8)

17.6

0.0 (0–0)

0

0 (0–0)

Type of crops

 Hevea brasiliensis

1761 (37)

97.3

14.5 (9.1- 31)

H = 25.7, df = 2, P < 0.001

0

0 (0–0)

H = 464, df = 3, P = 0.2

 Manihot esculenta

1778 (37)

93.8

5.0 (3.1–7.5)

0.1

0 (0–0)

 No cultivated crops

1210 (25)

53.5

0.3 (0 -2.0)

2.9

0 (0–0)

Presence of fruit trees

 No

1926 (44)

114.4

0.0 (0–2.1)

Z = 559, P = 0.05

1.4

0 (0–0)

Z = 792, P = 0.5

 Yes

2425 (56)

118.1

1.2 (0–5)

1.6

0 (0–0)

Presence of breeding site

 No

837 (19)

51.3

0.1 (0 -3.1)

Z = 620.5, P = 0.10

0

0 (0–0)

Z = 644, P < 0.05

 Yes

3514 (81)

181.2

0.9 (0–5.3)

3

0 (0–0)

Status of breeding site^a

 Negative

686 (20)

26.9

0.2 (0–0.8)

Z = 107.5, P < 0.001

2.9

0 (0–0.6)

Z = 349, P < 0.06

 Positive

2828 (80)

154.3

5.0 (1.1–8.4)

0.1

0 (0–0)