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Related Flashcards
Cards In This Set
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What is disease?
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any impairment that interferes with or modifies the performance of normal functions, including responses to environmental factors such as nutrition, toxicants, and climate; infectious agents; inherent or congenital defects; or combinations of these factors
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Enzootic
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disease of animals that occurs with predictable regularity and rate in a population or in an area
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Epizootic
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disease in animals that is occurring in a time or place where it is not expected, or at a rate greater than expected on past experience
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Pathogen
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disease spreading agent
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Vector
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An invertebrate that transmits an infectious agent among vertebrates and in which the agent multiples or completes some required portion of its life cycle
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Reservoir
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one or more epidemiologically connected population or environment in which an infectious agent can be permanently maintained
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Intermediate host
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host in indirect transmission cycles in which sexual replication of the agent does not occur
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Definitive host
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host in agent’s life cycle in which the agent undergoes sexual replication
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Dead-end host
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species that can be infected by a disease agent, but does not maintain the agent
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Epizootiology
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how” and “why” of diseases; science dealing with the character, ecology, and causes of disease outbreaks in animals
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Epidemiology
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study of disease in populations and the factors that determine its occurrence
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Etiology
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cause of disease; things leading up to disease
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Infectious agents
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gain entry inside the host organism; replicate inside
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Non-infectious disease
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don't always replicate within host; may be inside an organism but are not passed on (chemicals, cancer, nutrition, old age, genetics)
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Contagious
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capable of being transmitted from one individual to another Not all infectious diseases are contagious (Aspergillosis (infectious fungal disease but cannot be spread from one animal to another)
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