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动物媒介,而是由人传人经空气吸入飞传。
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动物媒介,而是由人传人经空气吸入飞传。
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