Pathogenicity and transmission of virulent Newcastle disease virus from the 2018–2019 California outbreak and related viruses in young and adult chickens - Dimitrov, Kiril M.; Ferreira, Helena Lage; Pantin-Jackwood, Mary J.; Taylor, Tonya L.; Goraichuk, Iryna V.; Crossley, Beate M.; Killian, Mary Lea; Bergeson, Nichole Hines; Torchetti, Mia Kin; Afonso, Claudio L.; Soarez, David L. (2019)