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Chain of infection

Conditions that must be met to stop the spread from one individual to another

1

Causative agent

A pathogen, such as a bacterium or virus that can cause disease

2

Reservoir

The host

3

Fomites

Objects such as doorknobs

4

Portal of exit

Escape from the reservoir

5

Mode of transmission

Spread from one person to another

6

Susceptible

Person likely to get an infection or disease

7

Aseptic

Free of disease

8

Sterile

Free from all organisms

9

Antisepsis

Prevents growth of pathogenic organisms

10

Disinfection

Destroys or kills pathogenic organisms

11

Sterilization

Destroys all microorganism including spores and viruses

12

What is the most important method to practice aseptic technique

Hand washing

13

What is PPE

Personal protective equipment such as gloves gowns lab coats masks and face shields