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12 Cards in this Set
- Front
- Back
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infection
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invasion of a susceptible host by pathogens or microorganisms, resulting in disease
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colonization
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the presence and growth of microorganisms within a host but without tissue invasion or damage; ex - MRSA
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ability to produce disease how strong
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virulence
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chain of infection
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transmission
portal of entry host susceptibility infectious agent reservoir portal of exit |
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infectious agent-development depends on these factors
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number of microorganisms
virulence entry/survival in host susceptibility |
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place where microorganisms survive, multiply, and wait to transfer to a susceptible host
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reservoir
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name common reservoirs
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humans, animals (hosts)
insects, food, water, and organic matter on inanimate surfaces (fomites) |
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explain direct, indirect, and droplet contact as a mode of transmission
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direct - person-to-person or physical contact between source and susceptible host
indirect - personal contact of susceptible host with contaminated inanimate object, i.e. needles or sharps, dressings droplet - large particles that travel up to 3 feet and come in contact with susceptible host, i.e. coughing, sneezing, talking |
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explain airborne mode of transmission
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droplet nuclei, residue or evaporated droplets suspended in the air
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name vehicle modes of transmission
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contaminated items
water drugs, solutions blood food (improperly handled, stored, cooked; fresh or thawed meats) |
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name vector modes of transmissions
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external mechanical transfer (flies)
internal transmission such as parasitic conditions between vector and host (i.e. mosquito, louose, tick, flea) |
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Name factors affecting susceptibility to infection
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Age
Hereditary Cultural Practices Nutritional Status Stress Rest and Exercise Inadequate Defenses Personal Habits Environmental Factors Immunization/Disease History Medical Therapies Clinical Appearance and Data (pg. 235 for explanations) |
