1. Dimitrov KM, Ramey AM, Qiu X, Bahl J, Afonso CL (2016) Temporal, geographic, and host distribution of avian paramyxovirus 1 (Newcastle disease virus). Infect Genet Evol 39:22–34
2. Dai Y, Liu M, Cheng X, Shen X, Wei Y, Zhou S, Yu S, Ding C (2013) Infectivity and pathogenicity of Newcastle disease virus strains of different avian origin and different virulence for mallard ducklings. Avian Dis 57:8–14
3. OIE (2012) OIE Terrestrial Manual 2012. Manual of diagnostic tests and vaccines for terrestrial animals. World Organisation for Animal Health, Paris, pp 576–586
4. Miller P, Koch G (2013) Newcastle disease. In: Swayne DE, Glisson JR, McDougald LR, Nolan LK, David LS, Nair VL (eds) Diseases of poultry, 13th edn. Wiley, New York, pp 98–107
5. Qamar-un-Nisa Younus M, Muti-ur-Rehman Maqbool A, Umar S (2017) Pathological alterations during co-infection of Newcastle disease virus with Escherichia coli in broiler chicken. Pakistan J Zool 50:495–503