pathogens

例句：

1. 1. The new vaccine has been shown to be effective against several pathogens.
   新疫苗已被证明对几种病原体有效。
2. 2.Pathogens can cause diseases in humans and animals.
   病原体可以引起人类和动物的疾病。
3. 3.Researchers are working on developing a vaccine that targets specific pathogens.
   研究人员正在研究开发一种针对特定病原体的疫苗。