Table 2.
Entomological parameters of An. gambiae stratified by study period in three villages of central Côte d’Ivoire
| Captured number | Biting rate (b/h/n) | Tested (infected) | Sporozoite index (%) | EIR (ib/h/n) | Annual EIR (ib/h/year) | |
|---|---|---|---|---|---|---|
| 2009-2010 period |
|
|
|
|
|
|
| N’Dakonankro |
389 |
16.2 (9.8-22.6) |
100 (2) |
2.0 (0–4.8) |
0.32 (0–1.08) |
116.8 (0–394.2) |
| Indoor |
259 |
21.6 (9.7-33.4) |
50 (2) |
4.0 (0–9.6) |
0.86 (0–3.22) |
313.9 (0–1,175.3) |
| Outdoor |
130 |
10.8 (5.5-16.1) |
50 (0) |
0 (0–7.0)* |
0 (0–1.13)* |
0 (0–412.5)* |
| Yoho |
565 |
23.5 (14.3-32.8) |
100 (1) |
1.0 (0–3.0) |
0.23 (0–0.98) |
83.9 (0–357.7) |
| Indoor |
320 |
26.7 (10.5-42.8) |
50 (0) |
0 (0–7.0)* |
0 (0–3.00)* |
0 (0–1,095.0)* |
| Outdoor |
245 |
20.4 (8.7-32.1) |
50 (1) |
2.0 (0–6.02) |
0.41 (0–1.93) |
149.6 (0–704.4) |
| Bozi |
848 |
35.3 (21.9-48.7) |
100 (4) |
4.0 (0.1-7.9) |
1.41 (0.02-3.85) |
514.6 (7.3-1,405.2) |
| Indoor |
421 |
35.1 (13.7-56.5) |
49 (1) |
2.0 (0–6.1) |
0.72 (0–3.47) |
262.8 (0–1,266.5) |
| Outdoor |
427 |
35.6 (15.8-55.4) |
51 (3) |
5.9 (0–12.6) |
2.09 (0–6.96) |
762.8 (0–2,540.4) |
| 2011-2012 period |
|
|
|
|
|
|
| N’Dakonankro |
1,776 |
49.3 (38.0-60.7) |
1,101(25) |
2.3 (1.4-3.2) |
1.12 (0.53-1.91) |
408.8 (193.4-697.1) |
| Indoor |
712 |
39.5 (27.0-52.1) |
497 (18) |
3.6 (2.0-5.3) |
1.43 (0.54-2.74) |
521.9 (197.1-1,000.1) |
| Outdoor |
1,064 |
59.1 (39.9-78.3) |
604 (7) |
1.2 (0.3-2.0) |
0.69 (0.12-1.57) |
251.8 (43.8-573.0) |
| Yoho |
80 |
2.2 (0.1-4.4) |
59 (2) |
3.4 (0–8.1) |
0.07 (0–0.35) |
25.5 (0–127.7) |
| Indoor |
18 |
1.0 (0–2.3) |
14 (0) |
0 (0–26.0)* |
0 (0–0.59)* |
0 (0–215.3)* |
| Outdoor |
62 |
3.4 (0–7.7) |
45 (2) |
4.4 (0–10.7) |
0.15 (0–0.82) |
54.7 (0–299.3) |
| Bozi |
347 |
9.6 (3.4-15.9) |
230 (4) |
1.7 (0–3.4) |
0.17 (0–0.55) |
62.0 (0–200.7) |
| Indoor |
120 |
6.7 (1.2-12.1) |
83 (2) |
2.4 (0–5.8) |
0.16 (0–0.70) |
58.4 (0–255.5) |
| Outdoor | 227 | 12.6 (0.8-24.4) | 147 (2) | 1.4 (0–3.2) | 0.18 (0–0.79) | 65.7 (0–288.3) |
( ): 95% confidence interval.
( )*: 97.5% confidence interval.
b/h/n: bites/human/night.
ib/h/n: infectious bites/human/night.