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2012-05-22 16:30:39

final exam
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  1. pathogens
    disease causing with special properties that permit host invasion
  2. disease
    when microogranisms overcome host defeses
  3. pathology
    the study of disease
  4. infection
    invasion and growth of pathoen in a host
  5. pathogenesis
    study of development of disease
  6. etiology
    study of the cause of disease
  7. animals are germ free
    in utero but are colonized almost immediatly after birth
  8. transients
    microorganisms that may occasionally be found associated with the host
  9. antagunism
    normal bacteria prevent growth of others
  10. symbosis
    bacteria and host live together
  11. commensalism symbosis
    one benefits
  12. mutalism symbosis
    both benefit
  13. parasitism symbosis
    one benefits, other is harmed
  14. opportunistic
    do not cause disease normally
  15. koch's postulate
    • establish etiology (cause)
    • same pathogen present in very instance of disease
    • pathogen isolated in culture
    • isolated pathogen causes disease when introduced to a healthy host
    • pathogen re isolated from the diesased host
  16. factors to host susceptablity
    • age
    • gender
    • climate
    • level of fatigue
    • and nutrition
  17. disease patterns
    • incubation period
    • prodominal period
    • illness period
    • decline period and convalescene period
  18. incubation period
    time between infection and first signs
  19. prodromal period
    first mild signs
  20. illness period
    period when all symptoms are pesent
  21. human reservoirs
    people who have disease or are carriers (infected/no symptoms)
  22. zoonose reservoirs
    wild or domestic animals that transmit disease to humans
  23. nonliving reservoirs
    soil and water
  24. transmition of disease
    • direct contact
    • fomites
    • droplet
    • medium
    • airborne
    • arthropod
  25. fomite transmittion
    inanimate objects
  26. droplet transmittion
    saliva, mucous coughing, or sneezing
  27. medium transmition
    food water and air
  28. arthropod transmittion
    insect vectors
  29. nosocomial infection
    • acquired during hospitilization or a stay in other health care facilities
    • occurs 5-15%
    • normal organisms introduced into wrong part of the body during invasive procedures
  30. compromised host
    burns, wounds, immune supressed
  31. chain of transmition
    direct contact and fomites
  32. crontrol of disease
    • aseptic transfer
    • cleaning storage
    • maintenance
    • trained staff
  33. problems of controling disease
    • multiple drug resistance
    • nonuse of effective cleaning agents
    • training of staff