ScienceWill we need annual boosters against COVID-19?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceDerrick Wiliams07/21/2022July 21, 2022DW science correspondent Derrick Williams explores the question of how long vaccination defenses remain robust, and whether they will need to be updated as the virus continues to evolve.https://p.dw.com/p/4ETfUAdvertisement