Health Curriculum: Unit 2--Main text: Grades 7-11

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

MAIN TEXT
(GRADES 7-11)

They strike, they attack, they invade and infect. These are some of the ways in which we describe the actions of disease-carrying agents on our bodies. The verbs evoke acts of great devastation and brutality, yet the microbes that cause infectious diseases are microscopic. In addition, all these tiny microbes are trying to do is survive, reproduce and live on much as humans try to survive, reproduce and live on. Unfortunately, in the process, they can eat away at us. They can destroy our cells and cause devastating diseases - not just in one person but in an entire region or community.

How can these tiny things be so devastating to our bodies? To an entire society? What are they, how do they get inside our bodies and what happens once they're there?

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