Estimating age-specific vaccine effectiveness using data from a large measles outbreak in Berlin, Germany, 2014/15: evidence for waning immunity Bitzegeio, Julia and Majowicz, Shannon and Matysiak-Klose, Dorothea and Sagebiel, Daniel and Werber, Dirk, Eurosurveillance, 24, 1800529 (2019), https://doi.org/10.2807/1560-7917.ES.2019.24.17.1800529