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11 Cards in this Set

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Infection
the relationship between two organisms and the competition for supremacy that takes place
Disease
any change from the gerneral state of good health
I=PVN/R
infectious disease formula I- infection V- virulence N- numbers R- resistance of body
Normal Flora
organisms normally present in the bnody
symbiosis
relationship between body and microbiota
mutualism
beneficial relationship between body and microorganisms. some prevent overgrowth of bacteria
commensalism
symbiosis only beneficial to microbe
pathogenicity
ability of microbes to enter host tissues results in altered health and leads to disease
Pathogen
an organism that can cause disease
parasitism
a symbiotic relationship between host and parasite
opportunist
an organism that can only cause disease in a weakened individual