42 terms

CH 20 epidemiology

STUDY
PLAY
epidemiology
study epidemics
symptoms
changes in body function that the patient feels
signs
observable changes
commincable disease
illness that can be spread
contagious disease
illness that is easily spread
noncommunicable disease
not spread person from person
incidence
number that become ill in a certain peroid of time
prevalence
number currently having the disease
sporadic
occurs occasionally
endemic
constantly present
epidemic
many are infected in short period of time
pandemic
world wide infection
acute
sudden or short lasting
chronic
slow or long lasting
local
confined to a small area
systemic/ generalized
throughout the body
bacteremia
bacteria are present in the blood
septicemia
bacteria are growing and multiplying in the blood
toxemia
toxins are in the blood
viremia
viruses are in the blood
primary infection
first infection that weaken the body for a second one
secondary infection
infections that occurs after another one weakens body
inapparant/subclinical infection
produces no effects
reservoirs
continual sources of microbes
ways diseases are transmitted
contact, comman vehichle, air borne, vectors
common portal of exits
respiratory and GI tracks
common portal of enrty
respiratory system
parenteral route
direct entry through the skin
LD50
num. of microbes needed to kill 50% of population
ID50
num. needed to cause infection in 50% of people
morbidity rate
# ill/# at risk x100
mortality rate
# die/ # ill x 100
nosocomial infection
aquired in the hospital
compromised host
a person w/ inpaired resistance
predisposing factor
circumstance that makes bofy more siceptible
incubation
time between infection and signs/symptoms
prodromal period
time shortly after incubation w/ wild symptoms
period of illness
time when symptoms are the worst
period of decline
time when illness leaves
convalescence
recovery of strength and normal activity
notifiable disease
required by law to be reported
CDC
centers for diseased control