du Plessis J L, Potgieter F T, van Gas L
Veterinary Research Institute, Onderstepoort.
Onderstepoort J Vet Res. 1990 Sep;57(3):205-8.
Neither sheep immune to the Ball 3, the Kwanyanga or the Mara stocks of Cowdria ruminantium nor those immunized with combinations of these 3 stocks were protected against challenge with the Mali stock. Against challenge with the Welgevonden stock, however, immunization with each of the 3 combinations and with single stocks effected a protective immunity.
对反刍兽考德里氏体的Ball 3株、夸扬加株或马拉株免疫的绵羊，以及用这3种毒株的组合免疫的绵羊，均不能抵御马里毒株的攻击。然而，对于韦尔格芬登毒株的攻击，用这3种组合毒株中的每一种以及单一毒株进行免疫均可产生保护性免疫。
