2East I. Kite V, Daniels P, et al. A cross-sectional survey of Australian chicken farms to identify risk factors associated with seropositivity to Newcastle-disease virus[J]. Preventive Veterinary Medicine, 2006, 77: 199-214.
3VG KITE, DB BOYLE, HG HEINE, et al. A serological and virological survey for evidence of infection with Newcastle disease virus in Australian chicken farms. Australian Veterinary Journal Volume 85, No 6, June 2007.
4Serro E, Meers J, Pym R, et al. Prevalence and inci- dence of Newcastle disease and prevalence of Avian Influenza infection of scavenging village chickens in Timor-Lest6[J]. Pre-ventive Veterinary Medicine, 2012, 104: 301-308.
5Chaka H, Goutard F, Roger F, et al. Household-level risk factors for Newcastle disease seropositivity and incidence of Newcastle disease virus exposure in backyard chicken flocks in Eastern Shewa zone, Ethiopia[J]. Preventive Veterinary Medicine, 2013, 109: 312-320.
6Andriamanivo H R, Lancelot R, Maminiaina O F, et al. Risk factors for avian influenza and Newcastle disease in small- holder farming systems, Madagascar highlands[J]. Preventive Veterinary Medicine, 2012, 104: 114-124.
