疫毒 meaning in English

epidemic toxin

In recent years , there is occurrence nd continuously in the nd la sola vaccine immunity and high antibody chicken , some scholars reported its reason relation with not only immunity method , path , vaccine etc . , but also poison and different genotype . one virus isolate was obtained from the diseased chicken flocks in jilin province using spf chicken embryos
近年来，在新城疫lasota疫苗免疫鸡群及高抗体鸡群中不断有新城疫的发生，有学者报道，其原因不仅与免疫方法、途径、疫苗等有关，更重要的是与新城疫毒株的变异，不同基因型的出现有关。