利什曼原虫

例句：

1. 1. The disease is caused by a specific type of protozoan called Leishmania.
   这种疾病是由一种特定的原生动物，叫做利什曼原虫引起的。
2. 2. Researchers have found that the parasite can be transmitted to humans through mosquitoes.
   研究人员发现，这种寄生虫可以通过蚊子传播给人类。
3. 3. Treatments for leishmaniasis involve drugs that target the parasite's DNA.
   治疗利什曼病的方法涉及针对寄生虫DNA的药物。