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Bacteria - 3 types

1. cocci = spherical
2. bacilli = rod shaped
3. spriochetes = cork screw


... of an organism, or it's ability to cause disease


occurs with predictability in one specific region or population


the reservoir for growth & multiplication of microorganisms is the natural habitat of the organism

infection cycle

1. infectious agent
2. reservoir
3. portal of exit
4. means of transportation
5. portals of entry
5. susceptible host

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