Adu F D, Oyejide O, Ikede B O
Avian Dis. 1985 Jul-Sep;29(3):829-31.
Newcastle disease virus was isolated from outbreaks of the disease in vaccinated and unvaccinated poultry flocks representing commercial and backyard farms in different parts of Nigeria. On characterization, all 12 isolates were found to be velogenic.
新城疫病毒是从尼日利亚不同地区代表商业养殖场和家庭养殖场的接种疫苗和未接种疫苗的家禽群疾病暴发中分离出来的。经鉴定,所有12株分离株均为速发型。