Impact of Disease on Populations Without Herd Immunity

How much has contact with disease impacted the world when populations have no herd immunity?

According to the graph, which disease caused approximately 8 million deaths in Mexico around the year 1520?

• Cocoliztli

• Smallpox

• Influenza

• Measles

What is the term for the following definition? A sudden and unexpected increase in the occurrence of a disease.

What is the term for the following definition? A dramatically increased occurrence of a disease in a particular community at a particular time.

What is the term for the following definition? An epidemic that has spread across multiple countries and/or continents.

What is the term for the following definition? Protection against a disease created by antibodies and memory cells produced by an individual's own immune system without medical intervention.

Due to the increasing spread of diseases brought by Europeans, it infected and killed thousands of ________ people.

Before the Europeans arrived in Australia, the Aboriginal and Torres Strait Island people had a healthy lifestyle, a well-balanced diet, with varied food sources and an intricate knowledge and use of natural medicines.

• True

• False

Within the first 50 years of European settlement, over what percentage of the indigenous population had decreased due to new European pathogens?

• 10%

• 30%

• 60%

• 90%

Refer to the diagram showing the spread of disease among people. What does the diagram illustrate about the impact of European diseases on Aboriginal and Torres Strait Islander communities?