1). The incubation period occurs in an acute disease after the initial entry of the pathogen into the host (patient). It is during this time the pathogen begins multiplying in the host.

What is the first stage of pathogenesis?

Stages of Pathogenesis. To cause disease, a pathogen must successfully achieve four steps or stages of pathogenesis: exposure (contact), adhesion (colonization), invasion, and infection.

What is the pathogenesis phase?

Pathogenesis phase

This phase begins with entry of the disease “agent” in the susceptible human host. After the entry, agent multiplies and induces tissue and physiological changes, the disease progresses through the period of incubation and later through the period of early and late pathogenesis.