The EFIS vaccination task force expert report. Issue 5 (5th May 2021) - Sarantopoulos, Alexandros; Brown, Doug; Wiedermann, Ursula; Dominguez, Carmen Alvarez; Bogdan, Christian; Gürsel, İhsan; Janković, Srđa; LeClerc, Claude; Locati, Massimo; Spurkland, Anne; Regateiro, Frederico; Van Damme, Pierre; et al.