This is why humans are unlikely to be infected by plant viruses, and why bees don't catch the flu.

这就是为什么人类不太可能被植物病毒感染，以及蜜蜂不会感染流感的原因。

There are many species;they become pesticide resistant; and they transmit hundreds of plant viruses that cause cassava brown streak disease and cassava mosaic disease.

种类繁多，对杀虫剂产生抗药性；它们传播数百种植物病毒， 导致木薯褐条病和木薯花叶病。