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Article: HOW STUFF WORKS: ; Immune system works to eliminate illness
- Article from:
- Charleston Gazette
- Article date:
- December 29, 2008
- Author:
CopyrightCopyright 2008 Charleston Gazette. Provided by ProQuest LLC. (Hide copyright information)
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All human beings get sick. It's so common that we build sickness
into our schedules, in the form of "sick time." We can't really
predict when it will happen, but sickness happens to everyone.
Sickness comes in many forms. The two most common causes of
sickness are viruses and bacteria. We hear about these things all
the time. On the virus side there are cold viruses, flu viruses,
tetanus, smallpox, mumps, measles, polio and many more. On the
bacteria side there are all kinds of bacterial infections like skin
infections, lung infections, urinary tract infections and so on.
Your body has an immune system that works well to eliminate
sickness. For example, if you catch a cold, your immune ...