Avian influenza overview - update on 19 November 2020, EU/EEA and the UK. - Adlhoch, Cornelia; Fusaro, Alice; Gonzales, José L.; Kuiken, Thijs; Marangon, Stefano; Niqueux, Éric; Staubach, Christoph; Smietanka, Krzysztof; Terregino, Calogero; Van der Stede, Yves; Aznar, Inma; Baldinelli, Francesca (EFSA Journal, 2020)