Progress of an Infection

Step 1: Becoming Established
1. Portals of Entry
  Annotations:
  - Skin, GI Tract, Respiratory Tract, & Urinary Tract
2. Infectious Dose
  Annotations:
  - the minimum number of microbes necessary to cause an infection to proceed
Step 2: Attaching to the Host
1. Adhesion
  Annotations:
  - fimbriae (pili), surface proteins, adhesive slimes or capsules, specialized receptors
Step 3: Surviving Host Defenses
1. Phagocytes
  1. Slime or Capsule
  2. Survival Inside
    Annotations:
    - Legionella, Mycobacterium, and many rickettsias
Step 4: Causing Disease
1. Enzymes
2. Toxins
3. Host's Defenses

Resource summary

	Created by Rachel Halverson over 11 years ago