What factor helped to spread the disease of myxomatosis?

什么因素助⻓了多发性粘液瘤疾病的蔓延？

(and apparently no other animal) was susceptible to a fatal virus disease, myxomatosis.

（显然不包括别的动物）易患一种叫“多发性粘液瘤”的致命毒性疾病。

A French physician decided to get rid of the wild rabbits on his own estate and introduced myxomatosis.

一位法国内科医生决定除掉自己庄园内的野兔子，于是引进了这种多发性粘液瘤疾病。

Scientists discovered that this particular variety of rabbit (and apparently no other animal) was susceptible to a fatal virus disease, myxomatosis.

科学家们发现，这种特殊品种的兔子（显然不包括别的动物）易患一种叫“多发性粘液瘤”的致命毒性疾病。