head lice and general uncleanliness in schools.
学校里的头虱和普遍肮脏。
head lice and general uncleanliness in schools.
学校里的头虱和普遍肮脏。
Several distinct rickettsiae (a parasite carried by ticks, fleas, and lice) cause a disease known as typhus in humans.All cause disease with similarities of fever, headache, and rash.
同的发疹伤寒病原体(可壁虱,跳蚤,虱子等寄生虫传播)起的疾病被人们称为斑疹伤寒。
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