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Canada (511,354)
Health Studies (1,194)
HLTB21H3 (204)
Lecture

Lecture 1 Notes

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Department
Health Studies
Course Code
HLTB21H3
Professor
Caroline Barakat

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Description
DEFINITIONS Parasites organism that grows, feeds, and is sheltered on or in a different organism and that does not contribute to the survival of its host Virus ultimate micro-parasite smaller than bacteria; neither cells not organisms; can only reproduce within their host Macroparasites composed of many cells; does not multiply in host, instead cycles through transmission stageseggs and larvaewhich pass into the external environment Transmission - movement of a parasite from host to host Incubation period the interval of time required for development of a disease Latent period - seemingly inactive period between exposure to an infection and subsequent illness Parasite virulence - capacity of a parasite to cause disease Zoonotic infections - animal infections that can be transmitted to humans MODES OF DISEASE TRANSMISSION - Direct occurs through direct contact, e.g. from person to person - Indirect through a common route vector, e.g. contam
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