"Infection" is, at base, dysbiosis or microbial proliferation.
Either the local environment of the microbe has changed.
Or, it has been introduced into a new environment.
In either case, the microbe's terrain has changed.
Germ Theory is a special case of Terrain Theory.

Germ Theory Is Incomplete | Part 2
After a full year of ruminating on this topic, the time has come for Part 2 of this conversation.
