Now that you have completed this study session, you can assess how well you have achieved its Learning Outcomes by answering these questions.

Insert the words below into the table to match the headings.

Pathogen type What it is One disease caused

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Pathogen type What it is One disease caused
Bacteria Simple micro-organisms Typhoid
Viruses Infectious agents that invade cells Polio
Protozoa Single-celled animals that live inside humans Malaria
Parasitic worms Animals that live inside humans, usually in the intestines Ascariasis

Imagine that you are working with the mother of a two-year-old child. Use the F diagram (Figure 2.5) to give her some examples of how she could reduce the child’s exposure to faecal pathogens.

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As well as ensuring the family is using water that is safe to drink, the focus should be on reducing the potential for the child to come into contact with faeces directly and indirectly. These barriers could include:

How do good sanitation and waste management practices bring a positive effect to urban inhabitants? Give examples for effects on:

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