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14 Cards in this Set

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