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14 Cards in this Set
- Front
- Back
Colonization
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transient or chronic association of a fungus with an individual in the absence of interference with normal physiological functions of the host
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Disease (mycosis)
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association b/t fungus and individual resulting in a pathologic process (infection) due to:
fungal growth toxin production immune response to pathogen |
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Strict (Primary) Pathogen
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etiologic agent capable of infecting healthy immunocompetent hosts and therefore always associated with pathological disease
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Opportunistic (secondary) Pathogen
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microorganism which is likely a component of the host’s normal microflora or environment which only causes disease when normal defense mechanisms are compromised
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Virulence Factors
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a microbial by-product or property which facilitates a disease process
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Characteristics of strict fungal pathogens
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Dimorphic: exist in the environment as saprophytic molds which produce airborne infectious conidia and grow asexually as parasitic unicellular yeasts in the host respiratory mucosa
Facultatively parasitic cause respiratory infx's |
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Characteristics of opportunistic fungal pathogens
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Virulence is a function of host health status
usually members of normal commensal microflora or as saprophytic organisms in the environment |
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Superficial Mycosis
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involve infections of outer skin and hair surfaces which are nondestructive
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Cutaneous Mycosis
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infections of keratin-containing layers of skin, hair, and nails which can induce immunologic responses
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Subcutaneous Mycosis
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localized infections of deeper layers of skin, cornea, muscle, and connective tissue with induction of immunologic responses
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Systemic Mycosis
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pulmonary infections which disseminate caused by primary dimorphic fungal pathogens
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Opportunistic Mycosis
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infections caused by otherwise innocuous commensal or environmental fungi in hosts having compromised defenses
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Mycotoxicoses
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secondary fungal metabolites
occur after ingestion, inhalation, direct contact severity depend on type, exposure, duration, health status |
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what is the most common route of infection of mycotoxins?
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ingestion of contaminated food
not passed person to person |