Rhee J K, Yang H J, Yook S Y, Kim H C
Department of Parasitology, Veterinary School, Chonbuk National University, Chonju, Korea.
Korean J Parasitol. 1998 Sep;36(3):203-6. doi: 10.3347/kjp.1998.36.3.203.
Two-day-old commercial chicks were inoculated orally with 2 x 10(6) oocysts of Cryptosporidium baileyi and vaccinated with 10(3.5) EID50/head of a commercially available avian infectious bronchitis (IB) live virus vaccine at 4 and 14 days following inoculation. Chicks infected with C. baileyi were shown to have an immunosuppressive effect on IB virus. It is concluded that infection with the protozoon in early life may increase their susceptibility to IB.
将2日龄的商品雏鸡经口接种2×10⁶个贝利隐孢子虫卵囊，并在接种后第4天和第14天用10³·⁵ EID₅₀/只的市售禽传染性支气管炎（IB）活病毒疫苗进行免疫接种。结果显示，感染贝利隐孢子虫的雏鸡对IB病毒具有免疫抑制作用。得出的结论是，幼年时期感染这种原生动物可能会增加它们对IB的易感性。
