Host-Microorganism Interactions Flashcards
the stages of interaction between host and microorganisms are:
(1) the physical encounter between host and microorganism;
(2) colonization or survival of the microorganism on an internal (gastrointestinal, respiratory, or genitourinary tract) or external (skin) surface of the host;
(3) microbial entry, invasion,
and dissemination to deeper tissues and organs of the
human body
(4) resolution or outcome
A person who harbors the etiologic agent but shows
no apparent signs or symptoms of infection or disease
carrier
The etiologic agent responsible for an
epidemic or outbreak originates from a single source or
reservoir
common source
The number of NEW diseases or infected
persons in a population
disease incidence
The PERCENTAGE of diseased persons in
a given population at a particular time
disease prevalence
A disease constantly present at some rate of
occurrence in a particular location
endemic
A larger than normal number of diseased or
infected individuals in a particular location
epidemic
A microorganism responsible for causing
infection or infectious disease
etiologic agent
The means by which etiologic agents
are brought in contact with the human host
mode of transmission
The state of disease and its associated effects on
the host
morbidity
The incidence of a particular disease state
morbidity rate
Death resulting from disease
mortality
The incidence in which a disease results in
death
mortality rate
A larger than normal number of diseased or
infected individuals that occurs over a relatively short
period
outbreak
The origin of the etiologic agent or location from
which it disseminates
reservoir
