Fighting Disease: Health At The End Of The Millennium Another Wired Curriculum from The United Nations CyberSchoolBus
Introduction How They Work How They Spread Poverty and Disease Prevention Immunization		Unit 2 Inside the Body: How Infectious Diseases Work QUESTIONS AND ACTIVITIES What is an infectious disease? What is a pathogen? Name three kinds of pathogen and list some of their characteristics. What are the body's main lines of defense? The unit uses a number of metaphors to describe the body's defenses. Can you come up with your own set of metaphors? Describe what a vaccine is and what it does. Look at the scale below. Print it out or reproduce one in class. Then place each of the icons in their right place on the scale. Relative Sizes of Organisms unit = meters Bacteria Chicken Egg Human Viruses Frog Egg (or grain of salt)
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