1. The Cycle of Infection

2.  Infections & Diseases classified as;  Endogenous  Exogenous  Nosocomial  Opportunistic

3.  Also classified as:  Aerobic  Anaerobic

4. Chain of Infection  Infection cycle is well defined:  Infective agent  Reservoir  Portal of exit  Means of transmission  Portal of entry  Susceptible host

5.  The cycle can be blocked at any time;  Neutralize or destroy the agent  Reservoir maintain hygiene  Close portal of exit  Route is minimized  Portal of entry blocked  Health and wellness of host

6. Microorganisms & Disease  Fungi  Protozoa  Virus  Bacteria  Aerobic  Anaerobic  Cocci  Bacilla  Spirilla  Rickettsiae

7. Asepsis  Medical asepsis  Antiseptic  Disinfectant  Sterile  Surgical asepsis

8. Epidemiology  Epidemiologist  Endemic  Epidemic  Pandemic