RESUMEN
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.
Asunto(s)
Anticuerpos Antivirales/inmunología , Fiebre Chikungunya/epidemiología , Fiebre Chikungunya/inmunología , Virus Chikungunya/inmunología , Virus del Dengue/inmunología , Dengue/epidemiología , Dengue/inmunología , Adolescente , Adulto , Anticuerpos Neutralizantes/inmunología , Fiebre Chikungunya/historia , Niño , Preescolar , Dengue/historia , Historia del Siglo XXI , Humanos , Persona de Mediana Edad , Pruebas de Neutralización , Polinesia/epidemiología , Estudios Seroepidemiológicos , Adulto JovenRESUMEN
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.
Asunto(s)
Aedes/virología , Infecciones por Alphavirus/epidemiología , Anticuerpos Antivirales/sangre , Culex/virología , Inmunoglobulina G/sangre , Insectos Vectores/virología , Virus del Río Ross/aislamiento & purificación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Infecciones por Alphavirus/transmisión , Infecciones por Alphavirus/virología , Animales , Enfermedades Asintomáticas , Donantes de Sangre , Niño , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Polinesia/epidemiología , Virus del Río Ross/inmunología , Estudios SeroepidemiológicosRESUMEN
During 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.