Understanding Contagion
This worksheet covers key concepts related to contagion, including types of pathogens, modes of transmission, and prevention methods.
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Understanding Contagion
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Read each question carefully and answer to the best of your ability.
1. Which of the following is NOT a type of pathogen?
Bacteria
Viruses
Fungi
Cells
2. Diseases that can be spread from one person or organism to another are called diseases.
3. A is an organism that carries and transmits a pathogen to another organism.
4. Describe two ways in which contagious diseases can be transmitted.
5. Washing your hands frequently is an effective way to prevent the spread of many contagious diseases.
True
False
6. Look at the image below. Is this a bacterium or a virus? Explain your reasoning.

Match each term on the left with its definition on the right.
7. Pathogen
a. The process by which a disease spreads
8. Contagion
b. An agent that causes disease
9. Host
c. An organism that harbors a pathogen