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Pathogens, transmission and communicable disease

Disease, immunity and health · Lesson 2 of 5

Lesson 2 of 5

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Lesson 2 of 5 · Disease, immunity and health

Pathogens, transmission and communicable disease

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Identify bacteria, viruses, fungi and protoctists as major classes of pathogen, describing their key biological features and how they reproduce or replicate.
Explain how pathogens are transmitted by direct contact, contaminated food or water, droplets, vectors and other routes, and apply this to named human, animal or plant diseases where relevant.

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Describe the course of infection, including entry, incubation, multiplication and transmission, and explain how these stages affect the spread of communicable disease.

Interpret data on disease incidence, prevalence, mortality or transmission to compare communicable diseases and assess factors affecting spread within and between populations.

Explain and evaluate methods used to control the spread of communicable disease, including hygiene, isolation, vector control, safe water, food safety, quarantine and antimicrobial treatment where appropriate.

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