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Spreading Disease (Types of Pathogens (Barcteria (can cause tetanus, strep…
Spreading Disease
Types of Pathogens
Barcteria
can cause tetanus, strep throat, tuberculosis.
Protozoan
can cause Giardia, Malaria
Viruses
can cause common cold, influenza, Hepatitis
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Koch's Postulate
Fourth Postulate
The suspected pathogen must be isolated from the new host, grown again in pure culture, and shown to have the same characteristics as the original pathogen.
Third Postulate
The suspected pathogen from the pure culture must cause the same disease when placed in a healthy new host.
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Definition
An infectious disease is a disease that is caused when a pathogen is passed from one organism to another through different ways .
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