Exam 8

Card Set Information

Author:
jhondras
ID:
163851
Filename:
Exam 8
Updated:
2012-07-26 13:48:57
Tags:
microbiology
Folders:

Description:
Chapters 21-23
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user jhondras on FreezingBlue Flashcards. What would you like to do?


  1. Moist areas
     increased numbers of bacteria than dry areas
  2. Defensins
    antibiotics produced by human skin
  3. Secretions:
    sebum and perspiration
  4. Normal Microbiota
    • gram + cocci and coagulase -
    • staph epidermididis (main organism surrounding skin)
    • propion bacteria (metabolizes oily secretions)
    • malascezia furfur (grow on oils-may be cause of dandruff)
  5. S. Aureus
    • Coagulase +
    • 20% of people always have S. aureus in their nasal cavities
    • 60% sometimes have it

    MRSA
  6. Impetiga
    • highly contagious in children 2-5 years old
    • caused by s. aureus
  7. Folliculitis
    • inflammation of hair follicle
    • caused by s. aureus
    • if on eyelash called sty
  8. Furnicle
    • boil
    • type of absess caused by s. aureus
  9. Toxic Shock Syndrome
    • caused by s. aureus
    • potentially life threatening
  10. Streptococcal Skin Infections Classifications
    classified by hemolytic enzymes, alpha, beta, gamma or cell wall antigens
  11. S. pyogenes
    • main pathogen
    • beta hemolytic
    • completely lyses RBCs
    • caused by strep
  12. Group A Beta Hemolytic
    • virulence factors
    • strep
  13. M Protein, erythrogenic toxin, deoxyribonuclease, streptokinase, hyaluronidase
    • severe and rapid tissue destruction
    • necrotizing faciitis
    • 15,000 cases per year
    • 40% mortalitiy
    • caused by strep
  14. Spyogenes
    • serious if it gets into dermis
    • caused by strep
  15. Pseudomonads
    Gram - rods found in soil and water
  16. Pseudomonads dermatitis
    • 2 weeks self limiting rash
    • bacterial
  17. Pseudomonads aeruginoa
    • produces endo and exotoxins
    • causes otis externa, respiratiory infections, burn infections and dermatitis (blue/green pus)
    • bacteria
  18. Buruli Ulcer
    • bacterial
    • found in west and central Africa and Mexico, S. America and Austraila
    • very deep ulcer thats very damaging
  19. Acne
    • 85% of teenagers (17 million in US)
    • propion bacterium acnes (oils/hormones)
    • bacterial
  20. Warts
    • papillomavirus
    • direct contact 
    • can be removed chemically or physically
    • virus
  21. Small Pox
    • In middle ages 80% of Europe contracted small pox
    • 20% mortality rate
    • Transmitted by respiratory droplets
    • Vaccination has erradicated this disease
  22. Chicken Pox and Shingles
    • varicella and herpes zoster
    • vesicular rash
    • can remain latent for life
  23. Herpes Simplex
    • cold sores, occassionaly encephilitis
    • lysogenic (remains dormant)
    • transmitted orally or respiratiory
  24. Measles
    • Respiratory transmission
    • Spots
    • Very dangerous to infants and old people
    • vaccination works 95% and gives long term immunity
    • virus
  25. Rubeola
    • severe measles
    • virus
  26. Rubella
    • german measles
    • much milder
    • can be asymptomatic
    • virus
  27. Cutaneous Mycoses
    • can grow on keratin containing surfaces (skin, hair nails)
    • ringworm
    • athletes foot
    • fungi
  28. Subcutaneous Mycoses
    • through wound (below epidermidis)
    • soil fungus: sporotrichosis
  29. Candidiases
    • Candida albicans (thrush, vaginitis)
    • oppurtunistic
    • fungal
  30. Scabies
    • Mites
    • 500,000 people per year in US
    • treated with permethrin
  31. Pediculosis
    • Lice
    • different areas of body are different strains
  32. Conjunctivitis
    • Red eye
    • haemophilus influenza or adenovirus
    • causes can also include allergies or improperlly disinfected contact lenses
  33. Ophthalmia Neonatorum
    • neisseria gonorrhoea given to infant from mother during childbirth
    • big cause of blindness
    • silver nitrate replaced by antibiotics at birth
  34. Inclusion Conjnctiviits
    chlamydia trachomatis
  35. Trachoma
    • scar tissue
    • c. trachamati
    • transmission by hands, fomites and maybe flies
  36. Bacterial Meningitis
    over 50 species of opportunistic bacteria 
  37. Types of Bacterial Meningitis
    • 1) Haemophilus Influenza
    • 2) Neisseira meningitis
    • 3) Streptococcs pneumonia
  38. Haemophilus Influenza
    • bacterial meningitis
    • part of normal throat microbiota but causes disease if it enters blood stream
    • Mortality rate: 6%
    • causes 45% of meningitis cases
    • gram negative
  39. Neisseria Meningitis
    • bacterial meningitis
    • found in throats of healthy carriers but causes disease when gets into blood
    • often affects college students
    • Mortality rate: 9-12% with treatment, 80% without
    • gram negative
  40. Streptococcus pneumonia
    • bacterial meningitis
    • most commonly found in nasopharynx
    • Mortality rate: 30% in children, 80% in elderly
    • gram positive
  41. Meningitis diagnostic tests
    • Gram stain
    • cultures
    • serological tests
  42. Listeriosis
    • Listeria monocytogenes
    • causes meningitis in newborns, pregnant women and cancer patients
    • ingestion of contaminated food (deli meats)
    • can cross placenta and cause still births
    • 50% overall
    • 60% infant rate
  43. Tetanus
    • Clostridium tetanii
    • produces neurotoxin (tetanospasmin) which casues spasms of muscles
    • Immunization/booster available every 10 years
  44. Botulism
    • Clostridium botulinum
    • difficulty speaking/blurred vision
    • death in 1-10 days
  45. Infant botulism
    • from babies being fed honey or canned foods too early
    • causes SIDS
  46. Wound Botulism
    • rare
    • if spores get deep into wound where little O2 is found it can cause tissue death
  47. Leprosy
    • Mycobacterium Leprae
    • Tuberculoid form: loss of sensation in skin nodules
    • Lepromatous form: many diisseminated nodules and tissue death occurs
    • leads to death from secondary bacterial infections

    • Diagnosis: acid fast skin biopsy
    • Treatment: sulfone drugs
  48. Sepsis
    infection of blood
  49. Gram - Sepsis
    • usually endotoxin
    • leads to very low blood pressure
    • bacterial
  50. Gram + Sepsis
    • puperal sepsis: causes disease in unsanitary childbirth conditions
    • Antibody resistant enterococci
    • Group B streptococcus
  51. Diseases that directly damage heart tissue
    • Alphahemolytic strep
    • S. Aureus
    • Enterococci
  52. Rheumatic Fever
    • S. pyogenes
    • immune system produces antibodies agaginst antigens that cause symptoms
    • starts as sore throat and moves to blood stream
  53. Tularemia
    • francisella tularensis
    • rabbits and other mammals
    • pneumonia and septiciemia
    • 30% mortality
  54. Brucellosis
    • B. suis/B. abortus/B. melitensis
    • enters through tiny break in skin and moves rapidly to liver, spleen and mone marrow
    • reproduces in macrophages
    • fever at night
    • most common zoonosis
  55. Anthrax
    • bacillus anthracis
    • kills you when in blood stream
    • Cutaneous: through break in skin 20% MR
    • GI: Least common. 50% MR
    • Inhalation: terrorists 100% MR
  56. Gangrene
    • Clostriduim perfringes
    • soft tissue death from loss of blood supply
    • anaerobic
    • produces CO2
  57. Cat Scratch Disease
    • yersinia
    • pasteruella multocida
    • bartonella henselae

    found in cat saliva
  58. Rat Bite Fever
    Streptobacillus monilliformis
  59. Plague
    • yersinia pestis
    • flea bites
    • killed 2/3 of Europe in middle ages
  60. Lyme Disease
    • Barrelia Burgdorferi
    • ticks
    • field mice are animal resivoir
    • controlled by poison cottonballs
  61. Ehrichiosis
    tickbourne
  62. Typhus
    • Rickettsia
    • Spread by arthropod vectors

    • 1) Rocky Mountain Spotted Fever (ticks)
    • 2) Epidemic thypus (louse)
    • 3) Endemic murine thyphus (rodents)
  63. Burkitts Lymphoma
    • Epstein Barr Virus
    • oppurtunsitc
    • oncogenic virus (can cause tumors in jaw or GI)
  64. Cytomegalovirus
    • very large herpes virus
    • transmitted by saliva and other fluids
    • can be asymptomatic, mild or fatal
  65. Chickungunya Fever
    • Viral
    • high fever, extreme joint pain
    • Aegypti mosquito
  66. Yellow Fever
    • yellow fever virus
    • aedes agegypti mosquito
    • fever, chills, headache, nausea, jaundice
    • 20% MR
    • Monkeys natural resiovoir
  67. Dengue Fever
    • Dengue Fever Virus
    • aedes aegypti mosquito
    • endemic in tropical place
    • fever, muscle/joint pain and rash

    can cause death in children in hours (leading cause of child death in SE Asia)
  68. Emerging Viral Hemorrhagic Fevers
    • Marburg Virus
    • Lassa Fever
    •  Ebola
    • Argentine and Bolivian hemorrhagic fever
    • Hanta Virus
  69. Chagas Disease
    • Trypanosoma cruzi
    • transmission from bite of kissing bug
  70. Toxoplasmosis cased by Toxoplasma gondii
    • Definiteve Host: domesticated cat
    • Shed in feces or by undercooked meat
    • dangerous for pregnant women (kitty litter)

What would you like to do?

Home > Flashcards > Print Preview