Chain of Infection

Open the interactive poster full screen

Use Explore mode to select a marker or section. Use Quiz mode to practice finding each idea.

1. Pathogen — A pathogen is a microorganism or agent capable of causing disease.
2. Reservoir — A reservoir is where the pathogen normally lives or multiplies, such as people, animals, or environments.
3. Exit — A portal of exit is how a pathogen leaves its reservoir.
4. Transmission — Transmission may be direct, airborne, droplet, surface, food, water, blood, or vector-borne.
5. Entry — A portal of entry is how the pathogen reaches a new host.
6. Susceptible Host — Susceptibility reflects immunity, exposure, health, age, vaccination, and social conditions.

Teachers and editors can open calibration mode to adjust overlay positions.