covid-19 FHI: – Den fjerde korona-vaksinen kommer i midten av april The exterior of Johnson and Johnson's subsidiary Janssen Vaccines in Leiden, Netherlands March 9, 2021. REUTERS/Piroschka van de Wouw Illustrasjonsfoto: PIROSCHKA VAN DE WOUW/NTB Erik Martiniussen Erik Martiniussen Journalist 15.03.2021 - 10:44 covid-19 korona koronavirus