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