Causes and spread of infection

Unit aim

This unit is to enable the learner to understand the causes of infection and common illnesses that may result as a consequence. To understand the difference between both infection and colonisation and pathogenic and non pathogenic organisms, the areas of infection and the types caused by different organisms.

In addition the learner will understand the methods of transmission, the conditions needed for organisms to grow, the ways infection enter the body and key factors that may lead to infection occurring.

Outcome 1 Understand the causes of infection

1. identify the differences between bacteria, viruses, fungi and parasites

2. identify common illnesses and infections caused by bacteria, viruses, fungi and parasites

3. describe what is meant by “infection” and “colonisation”

4. explain what is meant by “systemic infection” and “localised infection”

5. identify poor practices that may lead to the spread of infection.

Outcome 2 Understand the transmission of infection

1. explain the conditions needed for the growth of micro-organisms

2. explain the ways an infective agent might enter the body

3. identify common sources of infection

4. explain how infective agents can be transmitted to a person

5. identify the key factors that will make it more likely that infection will occur.