She is very virulent about her former employer.

她对她过去的老板恨之入骨。

Septicaemic plague occurs when infection spreads directly through the bloodstream, while the pneumonic form is the most virulent but least common.

肺炎性鼠疫是不需要经跳蚤或介，而是由人传人经空气吸入受感染飞沬传播。

Results showed that germination percentage of urediospore, uredium number and sporulation of challenge inoculation race were reduced after inoculation with weak virulent race.

试验结果表明，弱小种诱导接种可以降低挑战接种菌系的孢子萌发率、孢子堆数量、产孢量。