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23 terms

Ch 13 Microbiology

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Convalescent period
The period between the end of a disease and the complete restoration of health in a patient
Localized infection
microbes enter the body and remains confined to a specific tissue
Systemic infection
infection spreads to several sites and tissue fluids usually in the bloodstream
Focal infection
when infectious agent breaks loose from a local infection and is carried to other tissues
Mixed infection
several agents establish themselves simultaneously at the infection site
Polymicrobial
infection involving multiple bacteria (a variety of anaerobes)
Primary infection
initial infection
Secondary infection
Opportunistic infection after a primary (predisposing) infection
Acute infections
diseases that occur quickly and have severe symptoms, but last only for a short time.
Chronic infections
Infections that progress and persist over a long period of time
Sign
Any objective evidence of disease as noted by an observer
Symptom
Subjective evidence of disease as sensed by the patient
Syndrome
a disease that can be identified or defined by a certain complex of signs and symptoms
Inflammation
nonspecific response to tissue injury that protects the host from further damage. stimulates immune re-activity and blocks the spread of an infectious agent
Edema
the accumulation of fluid in an afflicted tissue
Granulomas
collections of inflammatory cells and microbes in the tissues
Abscesses
an inflamed fibrous lesion enclosing a core of pus
Mortality rate
measures the total number of deaths in a population due to a certain disease
Morbidity rate
the number of persons afflicted with infectious diseases
Endemic
an infectious disease that exhibits a relatively steady frequency over a long time period
Sporadic
occasional cases are reported at irregular intervals in random locales
Epidemic
A widespread occurrence of an infectious disease in a community at a particular time
Pandemic
spread of epidemic across continents