They are caused by related parasites , plasmodium falciparum and plasmodium vivax .

他们由相应的寄生虫导致，分别是恶性疟原虫和间日疟原虫。

Mosquitoes transmit the parasite , plasmodium , that causes malaria , one the deadliest diseases on earth .

蚊子传播疟原虫，引发疟疾，是一种致死性强的世界性疾病。

Like plasmodium , which cycles between mosquitoes and man , toxoplasma cycles between its rodent and feline hosts , living out different phases of its existence in each .

与疟原虫在蚊子和人类之间循环传播类似，弓形虫的循环在它的寄主啮齿动物和猫科动物之间进行，它在不同的寄主身上以不同状态存在。

Toxoplasma gondii is not an alien ; it is a relative of that down-to-earth pathogen plasmodium , the beast that causes malaria .

然而兔弓形虫不是外星虫子，它实际上是疟原虫的亲属，这个令人讨厌的疟原虫是引发疟疾的元凶。

People who do not express the duffy blood-group protein were thought to be safe from infection by plasmodium vivax .

不会表型为杜菲血型蛋白的人，被认为不会被间日疟原虫所感染。