Meulemans G, Halen P, Vindevogel H, Gouffaux M
Res Vet Sci. 1977 Mar;22(2):222-4.
Immunodepression due to an infectious bursal agent (IBA) infection depends on the age of the birds, the time of Newcastle disease (ND) vaccination and the IBA strain used. The immunodepressive effect of IBA on ND vaccination can be avoided by vaccinating the chicks against ND at day old or by using attenuated strains of IBA in all commercial vaccines.
由传染性法氏囊病病原体（IBA）感染引起的免疫抑制取决于鸡的年龄、新城疫（ND）疫苗接种时间以及所使用的IBA毒株。通过在雏鸡一日龄时接种ND疫苗或在所有商业疫苗中使用IBA减毒株，可以避免IBA对ND疫苗接种的免疫抑制作用。
