What characteristic makes an invasive carrier of novel pathogens particularly dangerous?

Answer

It might show no symptoms itself, acting as a silent, persistent reservoir of infection

Invasive species introducing novel diseases can be highly damaging because the invasive carrier might remain asymptomatic while acting as a silent, persistent reservoir, allowing unchecked spread of the infection to defenseless native populations.

What characteristic makes an invasive carrier of novel pathogens particularly dangerous?
speciesEcologyhabitatinvasiondisruption