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Table 2 Entomological parameters of An. gambiae stratified by study period in three villages of central Côte d’Ivoire

From: Transmission of malaria in relation to distribution and coverage of long-lasting insecticidal nets in 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)
  1. ( ): 95% confidence interval.
  2. ( )*: 97.5% confidence interval.
  3. b/h/n: bites/human/night.
  4. ib/h/n: infectious bites/human/night.