Principles of Infection Control

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Principles of Infection Control

• I. Pathogens vs Nonpathogens
• A. Bacteria
• 1. Cocci -
• 2. Bacilli -
• 3. Spirilla -
• 4. Spores -

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• B. Protozoa -
• 1. May contain flagella which
• C. Fungi -
• D. Rickettsiae -
• 1. Cant live
• E. Virus -
• 1. Hepatitis B, HIV

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• II. Needs of organisms
• A. Oxygen
• 1. Aerobic -
• 2. Anaerobic -
• B. Darkness
• C. Warmth
• D. Food source
• E. Moisture

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• III. Chain of Infection
• A. Causative agent -
• B. Reservoir -
• 1. Humans
• 2. Animals
• 3. Fomites -

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• C. Portal of Exit
• 1.
• 2.
• 3.
• 4.
• 5.
• 6.
• D. Mode of transmission
• 1.
• 2.
• 3.
• 4.

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• E. Portal of entry -
• F. Susceptible host
• IV. How pathogens cause disease
• A. Toxins -
• B. Allergic reaction -
• C. Attack living cells -

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• V. Types of infection
• A. Endogenous -
• B. Exogenous -
• C. Nosocomial -
• D. Opportunistic -
• VI. Prevention of Infection
• A. Asepsis -
• B. Antiseptics -
• 1. Alcohol
• 2. Betadine
• C. Disinfection -
• D. Sterilization -