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VASCO study: A population-based prospective cohort study on vaccine effectiveness of COVID-19 vaccines in the Netherlands

The primary objective is to estimate product-specific vaccine effectiveness (VE) of the COVID-19 vaccines that are used in the Dutch national vaccination program against symptomatic SARS-CoV-2 infection by age and medical risk group at a time point…

Establishing a Controlled Human Infection Model with the Chikungunya live attenuated vaccine VLA1553 in healthy volunteers

The main objective of this study is to establish a controlled human infection model for Chikungunya using the VLA1553 vaccine.Primary objectives:- To assess the infection rate induced by a single administration of the VLA1553 vaccine- To assess the…