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 .
