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Table 1 Characteristics of the studied population: entomological, parasitological and immunological data

From: gSG6-P1 salivary biomarker discriminates micro-geographical heterogeneity of human exposure to Anopheles bites in low and seasonal malaria areas

Villages Variables Periods of survey
   October 2008 January 2009 June 2009 October 2009 January 2010
Agniam (n=41) An. gambiae Bites/human/night 8.37 0 1.62 12.5 0.5
  An. gambiae Females/Room/night 41 0.2 7.6 28.4 4.4
  % P. falciparum prevalence (95% CI)a 12.20 (2.18 ; 22.22) 19.50 (7.38 ; 31.64) 4.90 (-1.77 ; 11.47) 0.00 2.40 (-2.28 ; 7.16)
  % of immune responders (95% CI)b 80.49 (68.36 ; 92.62) 34.15 (19.63 ; 48.67) 29.27 (15.34 ; 43.2) 82.92 (71.41 ; 94.45) 24.40 (11.25 ; 37.53)
Niandane (n=71) An. gambiae Bites/human/night 13.87 0.62 1.5 11.12 0
An. gambiae Females/Room/night 11.6 0.6 1.4 9.4 0
% P. falciparum prevalence (95% CI) 21.10 (11.63 ; 30.63) 24.00 (14.01 ; 33.87) 4.20 (-0.45 ; 8.91) 4.20 (-0.45 ; 8.91) 0.00
% of immune responders (95% CI) 54.93 (43.36 ; 66.5) 21.12 (11.63 ; 30.63) 18.30 (9.30 ; 27.30) 33.80 (22.8 ; 44.8) 14.08 (5.99 ; 22.17)
Pendao (n=37) An. gambiae Bites/human/night 9.25 0.87 3.5 0.87 0.62
An. gambiae Females/Room/night 20.4 0.6 7.6 4.8 0.2
% P. falciparum prevalence (95% CI) 5.40 (-1.88 ; 12.7) 16.20 (4.34 ; 28.1) 2.70 (-2.52 ; 7.92) 0.00 0.00
% of immune responders (95% CI) 37.84 (22.21 ; 53.47) 24.32 (10.5 ; 38.14) 10.81 (0.8 ; 20.82) 32.43 (17.37 ; 47.51) 8.11 (-0.69 ; 16.91)
Guede (n=41) An. gambiae Bites/human/night 7.12 0 0.25 9.37 1.75
An. gambiae Females/Room/night 9.8 0 3 7.8 3.6
% P. falciparum prevalence (95% CI) 9.75 (0.68 ; 18.84) 31.70 (17.47 ; 45.95) 7.30 (-0.65 ; 15.29) 0.00 4.90 (-1.71 ; 11.47)
% of immune responders (95% CI) 39.02 (24.09 ; 53.95) 7.32 (-0.65 ; 15.29) 21.95 (9.28 ; 34.62) 43.90 (28.71 ; 59.09) 12.19 (2.18 ; 22.22)
Fanaye (n=75) An. gambiae Bites/human/night 2.75 0 0.75 3.87 0.37
  An. gambiae Females/Room/night 7.8 1.4 1.2 7.4 1.2
  % P. falciparum prevalence (95% CI) 16.00 (8.76 ; 25.9) 18.70 (9.85 ; 27.49) 2.70 (-0.98 ; 6.32) 1.30 (-1.26 ; 3.92) 0.00
  % of immune responders (95% CI) 9.33 (2.75 ; 15.91) 0.00 1.33 (-1.26 ; 3.92) 0.00 1.33 (-1.26 ; 3.92)
  1. n= number of children;
  2. Bites/human/night= number of An. gambiae caught by Human Landing Catches;
  3. Females/Room/Night= number of An. gambiae females caught by Pyrethrum Spray Catches;
  4. a Lower and upper 95% confidence interval of Plasmodium falciparum prevalence.
  5. b Lower and upper 95% confidence interval of Immune responders to gSG6-P1 salivary peptide.