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14 Cards in this Set

  • Front
  • Back
Etiologic Agent
any pathogen capable of causing infection; causative agents include bacteria, virus, fungi, protozoa, rickettsiae, and helminths
Reservior
favorable environment in which infectious organism grows and reproduces; reservior may be animate (humans insects, animals), or inanimate (food, water, soil, equipment)-blood and the respiratory, GI, reproductive, and urinary tracts serve as reserviors in humans.
Portal of exit
route by which microorganism leaves reservior-i.e. breaks in skin, secretions, etc.
Method of Transmission
mode by which microorganism is trnasferred from reservoir to host
3 mode of transmission
direct transmission, indirect transmission, airborne transmission
Direct contact/transmission
Involves physical transfer from reservior to susceptable host via either a vehicle or a vector: kising, biting, intercourse-coughing and sneezing within 3 feet of susceptable host
Indirect contact/transmission
Involves transfer from reservior to susceptable host via either a vehicle or a vector; vehicle borne agen requires inanimate object or animal
Airborne transmission
involves transport of droplet nuclei or dust bearing the infectious agent by air currents.
Susceptible Host
individual at an increased risk for infection-infection occcurs when the infectious agent overwhelm's host's defenses to resist infection
Medical Asepsis a.k.a
"clean technique"
Surgical asepsis
involves practices to maintain objects and areas free of microorganisms
MRSA
methicillin-resistant Staphylococcus aureus
VRE
vancomycin-resistant enterococcus
Droplet Precautions
particle droplets larger than 5 microns, normally via respiratory tract