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Unit 2

What does it mean to have an infectious disease?

What makes contracting cholera different from getting cancer or food poisoning? What did people think caused infectious disease before they had the tools to see viruses and bacteria with their own eyes? In this unit, we put modern and historical theories to the test.

Lesson 1: Infectious Disease Detectives – Typhoid Mary (pdf)

Lesson 2: How can we prove a disease is infectious? Infectious spread and cholera – The Ghost Map (pdf)

Lesson 3: Identifying infectious bacteria (1) – Infectious spread (pdf)

Lesson 4: When is a disease infectious? – Koch’s postulates and cholera (pdf)

Lesson 5: Identifying infectious bacteria (2) – ulcers and what’s up your nose? (pdf)

Lesson 6: Diagnosing infections and what’s up your nose? (pdf)

Lesson 7: Antibiotic resistance

Do Online: Unit 2 Multimedia

Infectious Disease Blog: Unit 2 Further Reading