Temporal distribution of CHIK incident cases.

<p>Temporal distribution of CHIK incident cases.</p

Evolution of CHIKV seroprevalence.

<p>Evolution of CHIKV seroprevalence.</p

Flow chart of sample collection.

<p>Flow chart of sample collection.</p

Distribution of CHIKV seroprevalence in age-groups at the end of the outbreak.

<p>Seroprevalence was measured in 1,754 donors sampled in January 2015 (pop#4). P values indicates that distribution of seroprevalence in age-groups is different from null hypothesis in the global population tested and in Martinique, but not in Guadeloupe where all values are close to 50%.</p

Statistical analysis of risk factors associated with antibodies to CHIKV (univariate analysis).

<p>Statistical analysis of risk factors associated with antibodies to CHIKV (univariate analysis).</p

Association between potential risk factors and anti-EBOV IgG seropositivity.

<p>Association between potential risk factors and anti-EBOV IgG seropositivity.</p

Individual titres of the EBOV and MARV-positives.

<p>Individual titres of the EBOV and MARV-positives.</p

Socio-demographic characteristics of blood donors in study areas, March-July 2011.

<p>Socio-demographic characteristics of blood donors in study areas, March-July 2011.</p

Serological results for Zika, dengue and chikungunya in Bolivian blood donors.

<p>Serological results for Zika, dengue and chikungunya in Bolivian blood donors.</p

Zika virus seroprevalence in Bolivian volunteer blood donors.

<p>Samples were collected in December 2016 (Beni) and from March to April 2017 (other regions). The figure shows in each of the five regions investigated the proportion of samples positives in both ELISA and Virus Neutralisation Test (the black circle represents the proportion of positives): Santa Cruz (altitude ~400m) and Beni (alt. ~150m) have tropical climate; Cochabamba (alt. ~2500m), Tarija (alt. ~1850m), and especially La Paz (alt. ~3650m) have colder subtropical highland climates.</p