exam 2 Flashcards
(71 cards)
Latent period
time delay between exposure and onset of contagiousness
incubation period
time delay between exposure and onset of disease S/S
communicable period
Contagious time, when person to person trasnmission is possible
Sporadic dz
dz that occurs occasionally in a population
endemic dz
dz constantly present in a population
epidemic dz
dz beyond normal expected rates in a community
Who spreads the dz?
index case, primary, secondary, and tertiary case
index case
first case identified in a population
primary case
person that brings the infection into a population
chain of infection (6)
pathogen, reservoir, susceptible host, mode of transmission, portal of entry and exit
Reservoirs
continual or potential sources of infection
A carrier state
colonization without apparent dz but can often spread the dz
Five routes of transmission
direct/indirect contact, droplet, airborne, common vehicle, and vectorborne
examples of droplet transmission
influenza, pertussis, and meningococcal meningitits
Examples of airborne transmission
measles, chicken pox, TB, and smallpox
two common vectorborne dz
Lyme dz and rocky mountain spotted fever
Which vector are we most concerned with?
tics
most common tic infection
Lyme dz
When and where does lyme dz occur most often
in the Summer, in wisconsin and minnesota
Where is rocky mountain spotted fever found
In the southeast, oklahoma, kansas, and missouri
Three parts of the epidemiologic triad
host, agent, and environment
environment for E. coli
undercooked hamburgers
Clostridium botulinum enivornment
In soil, foodstuff grown in soil, and improperly canned foods
Malaria environment
Parasite via mosquito vector
