HealthGlobal issuesAsk DerrickTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHealthGlobal issues09/06/2021September 6, 2021Our science correspondent Derrick Williams addresses concerns of those who are fully inoculated but still got COVID-19. Will the vaccine at least help their immune system fight it off?https://p.dw.com/p/3zz1vAdvertisement