Symptomatic chikungunya and chronic post-infection arthralgia in a highly endemic setting in Northeastern Brazil, 2018-2019: clinical characteristics, prevalence and associated factors

This multistage stratified cluster sampling population survey was conducted among residents aged 5 to 65 years between August 2018 and February 2019. We analysed a subset of chikungunya infected individuals to estimate the seroprevalence of symptomatic CHIKV infection and persistent post-infection arthralgia, as well as investigated associated risk factors among the CHIKV-exposed participants in this survey.