Map of Cameroon: main climatic zones and location of the 3 study sites.

<p>Map of Cameroon: main climatic zones and location of the 3 study sites.</p

Sero-epidemiologic survey of dengue in Yaounde, Cameroon in 2006–2007: Multivariate analysis using logistic regression with random effect.

<p>Sero-epidemiologic survey of dengue in Yaounde, Cameroon in 2006–2007: Multivariate analysis using logistic regression with random effect.</p

Sero-epidemiologic survey of dengue in Garoua, Cameroon in 2006–2007: Multivariate analysis using logistic regression with random effect.

<p>Sero-epidemiologic survey of dengue in Garoua, Cameroon in 2006–2007: Multivariate analysis using logistic regression with random effect.</p

Dengue seroprevalence according to (a) serotypes and (b) age groups in the three main cities in Cameroon in 2006–2007.

<p>Dengue seroprevalence according to (a) serotypes and (b) age groups in the three main cities in Cameroon in 2006–2007.</p

Individual IgG response to <i>Ae. albopictus</i> or <i>Ae. aegypti</i> SGE in Reunion Island and Bolivia.

<p>Individual IgG responses against <i>Ae. albopictus</i> SGE and <i>Ae. aegypti</i> SGE are presented in individuals from Reunion Island (black circle) and from Bolivia (white circle). The percentage of positive responders is indicated for each group. Bars indicate median value in each group. The dotted and solid lines represent the threshold of specific Ab response to <i>Ae. albopictus</i> (ΔOD = 0.271) and <i>Ae. aegypti</i> SGE (ΔOD = 0.161), respectively.</p

Individual IgG response to <i>Ae. albopictus</i> SGE in Reunion Island.

<p>Exposed (n = 110, Reunion Island) and unexposed individuals (n = 18, North France). Individual IgG Ab responses are represented by ΔOD. Bars indicate median value in each group and the dotted line represents the threshold of specific Ab response to <i>Ae. Albopictus</i> SGE (ΔOD = 0.271).</p

Individual cross-reactivity IgG response between <i>Ae. albopictus</i> and <i>Ae. aegypti</i> SGE.

<p>Correlations between IgG against <i>Ae. albopictus</i> SGE and <i>Ae. aegypti</i> SGE in Reunion Island (black circle) and Bolivia (white circle). The coefficient of correlation (r) and significance are indicated for each species SGE, black lines represent linear Spearman correlation.</p