Zika Virus Seroprevalence, French Polynesia, 2014-2015

International audienceDuring 2013-2014, French Polynesia experienced an outbreak of Zika virus infection. Serosurveys conducted at the end of the outbreak and 18 months later showed lower than expected disease prevalence rates (49%) and asymptomatic: symptomatic case ratios (1: 1) in the general population but significantly different prevalence rates (66%) and asymptomatic: symptomatic ratios (1: 2) in schoolchildren

Ross River Virus Seroprevalence, French Polynesia, 2014–2015

Ross River virus (RRV), spread by Aedes and Culex mosquitoes, is the most commonly transmitted arbovirus in Australia. A serosurvey of blood donors in French Polynesia during 2011–2013 suggested that RRV circulated without being detected. We report RRV circulation in French Polynesia based on further screening of blood samples collected during 2014–2015

Seroprevalence of Dengue and Chikungunya Virus Antibodies, French Polynesia, 2014–2015

We investigated dengue and chikungunya virus antibody seroprevalence in French Polynesia during 2014–2015. Dengue virus seroprevalence was ≈60% among schoolchildren and >83% among the general population; chikungunya virus seroprevalence was <3% before and 76% after Zika virus emergence (2013). Dengue virus herd immunity may affect Zika virus infection and pathogenesis