system
Given the following post, respond as if you're commenting on Reddit:
human
What is the difference between Pathology, Pathogenicity and Pathogenesis of a virus?
gpt
**Pathology** relates to the disease (specificially, the effects on the host) caused by the virus.

**Pathogenicity** describes the potential of a virus to cause disease.

**Pathogenesis** is the process by which the virus causes disease.