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MBI 111 EXAM 1 ACTUAL QUESTIONS AND ANSWERS WITH
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Terms in this set (130)
True Pathogen Microbes capable of causing disease in
healthy people with normal immune
defenses
Microbes capable of causing disease
Opportunistic when the hosts defenses are
Pathogens compromised or normal microbiota that
causes disease after entering part of the
body where they do not belong
Infectious Dose Minimum number of microbes required to
cause an infection in a hose (ranges from
one cell to billions of cells depending
on microbial type)
Acute Infection Infection that develops quickly, with sever but
short-lived effects
Chronic Infection Infection the progresses and persists over long
period of time
Communicable Disease in which the pathogen spread
Disease from one host to another, directly or
indirectly
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Contagious Disease Communicable disease in which the pathogen is
EASILY spread from host to host
Non-communicable Disease that does not spread from host to host
Disease
Latent Disease Occurs when a disease causing agent
remains inactive in the body for long
periods, but then becomes active to
cause disease
Sequelae Long term of permanent damage to tissues or
organs following a disease
Etiology Cause of a disease
Subclinical Infection Infection that exists with no symptoms of disease
Endogenous Infection Infection caused by normal microbiota
(usually in a body site in which they are
not normally found or in an immune
compromised host)
Exogenous Infection Infection caused by pathogenic microbes that
originate outside the hosts body
Localized Infection Invading microbes are limited to a relatively
small area of the body
Systemic Infection Invading microbes or microbial products spread
throughout the body
Focal Infection Invading microbes "breaks loose" from a
localized infection and are carried to
other tissues
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Mixed Infection Infection that involves more than one type of
pathogenic mircobe
Sporadic Disease Disease that occurs occasionally
Endemic Disease Disease occurring at some (more or less)
constant or expected level in a population
Epidemic Disease Occurrence of a disease in excess of the
endemic level (in excess of the normal or
expected level)
Pandemic Disease Worldwide epidemic
Incidence Number of new cases of a disease
occurring in a given population during a
given time period
Prevalence Number of cases of a disease present in a given
population at a given point in time
Symptons Changes in the body function not apparent to
others
Signs Changes in body function a health care worker
can measure and/or observe
Syndrome Specific group of signs and symptoms that
always accompany a particular disease
Healthcare associated Infection acquired or that develops during a stay
Infection in a hospital (or health care facility)
Microbes and Commensali
Humans live sm
together in 3 ways: Mutualism
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