Septicaemic plague occurs when infection spreads directly through the bloodstream, while the pneumonic form is the most virulent but least common.
肺炎性鼠需要跳蚤或动物媒介,而由人传人空气吸入受感染飞传播。
Septicaemic plague occurs when infection spreads directly through the bloodstream, while the pneumonic form is the most virulent but least common.
肺炎性鼠需要跳蚤或动物媒介,而由人传人空气吸入受感染飞传播。
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