Scientists Say: Virulence
There’s a word to describe how potent a virus or bacteria is in being able to cause disease
![ebola virus](https://www.snexplores.org/wp-content/uploads/2019/11/EBOLAopenerfree-1.jpg)
Some germs cause disease easily, but others require more exposure. This is a difference in virulence.
NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASE