Etiologic Agents Flashcards

1
Q

Acne

A

Propionibacterium acnes

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2
Q

Boils

A

Staphylococcus aureus

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3
Q

Impetigo

A

Staphylococcus aureus
Streptococcus pyogenes
Methicillin Resistant Staphylococcus aureus

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4
Q

Tinea infection

A

Epidermophyton
Trichophyton
Microsporum

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5
Q

Bacterial agents of conjunctivitis

A

Staphylococcus aureus
Streptococcus pneumoniae
Neisseria gonorrhoeae
Neisseria meningitidis
Chlamydia trachomatis
Haemophilus influenzae biogroup Aegyptus
Pseudomonas aeruginosa

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6
Q

Viral agents of conjunctivitis

A

Adenovirus types 3,7,8, and 23
HSV-1
Enterovirus 70
Coxsackie A24 virus
Measles virus

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7
Q

Otitis externa

A
  • Staphylococcus aureus
  • Pseudomonas aeruginosa
  • Group A streptococci
  • Proteus vulgaris
  • Candida albicans
  • Aspergillus niger
  • E. coli
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8
Q

Otitis media

A
  • Staphylococcus aureus
  • Hemophilus influenzae
  • Moraxella catarrhalis
  • Beta-hemolytic streptococci
  • Streptococcus pneumoniae
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9
Q

Meningococcemia

A

Neisseria menigitidis

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10
Q

Streptococcal pharyngitis

A

Streptococcus pyogenes

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11
Q

Common agents of Viral encephalitis

A

Herpes viruses (HSV-1)
West Nile Virus
Varicella zoster virus
Epstein-barr virus
Arthropod-borne virus
La Cross Virus
St. Louis encephalitis virus

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12
Q

Less common agents of viral encephalitis

A

Rabies
Eastern equine encephalitis virus
Western equine encephalitis virus
Powassan virus
Cytomegalovirus
Enterovirus
Colorado tick fever
mumps

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13
Q

TRUE OR FALSE

Meningococci is exclusively a human pathogen

A

TRUE

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14
Q

Transmission of meningococcemia

A

endogenous or exogenous
droplet

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15
Q

Pneumonia

A

Bacteria
- Streptococcus pneumoniae
- Klebsiella pneumoniae
- Pseudomonas aeruginosa

Viral
- respiratory syncytial virus
- cytomegalovirus
- influenza virus

Fungal
- Pneumocystis carinii
- Cryptococcus neoformans
- Histoplasma capsulatum

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16
Q

H5N1

A

Influenza virus type A
Subtype H5N1

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17
Q

H1N1

A

Influenza virus type A
Subtype H1N1

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18
Q

SARS

A

SARS-COV

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19
Q

COVID

A

SARS-COV-2

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20
Q

Diphtheria

A

Corynebacterium diphtheriae

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21
Q

Pertussis

A

Bordetella pertussis

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22
Q

Infectious mononucleosis

A

Epstein barr virus

23
Q

AIDS

A

Human immunodeficiency virus

24
Q

Common colds

A
  • Coronavirus
  • Adenovirus
  • Rhinovirus
25
Q

Influenza

A
  • myxovirus: influenza a b c
26
Q

Measles

A

Single stranded enveloped RNA virus with 1 serotype

genus: morbillivirus
family: paramyxoviridae

HUMANS ARE THE ONLY NATURAL HOSTS OF MEASLES

REMAIN INFECTIOUS IN THE AIR FOR UP TO 2 HOURS AFTER AN INFECTED PERSON LEAVES THE AREA

27
Q

Varicella/ Chicken pox

A
  • VZV
    DNA virus, member of herpesvirus group

Primary infection: causes varicella
Post-primary infection: VZV stays in the body (sensory nerve ganglia) as a latent infection
Reactivation of latent infection: causes herpes zoster (shingles)

IP: 14-16 days after exposure
DEVELOPMENT: 10 to 21 days after exposure
CONTAGIOUS PERIOD: 1 - 2 days before rash onset until all the lesions have been crusted

28
Q

Dengue fever

A

dengue virus 1,2,3,4

aedes mosquito

29
Q

Measles

A

anopheles mosquitos

30
Q

Parotitis

A
  • S. aureus
  • Single stranded RNA, paramyxovirus
31
Q

Dental caries

A
  • streptococcus mutans
  • streptococcus sobrinus
  • lactobacilli
32
Q

Shigellosis

A
  • S. dysentriae
  • S. boydii
  • S. flexneri
  • S. sonei
33
Q

Gastroenteritis

A

Bacterial
- Campylobacter jejuni
- E. coli

Viral
- Rotavirus
- Adenovirus
- Norovirus
- Astrovirus

34
Q

Typhoid fever

A
  • Salmonella typhi
    -Salmonella paratyphi
35
Q

Cholera

A

vibrio cholerae

36
Q

PUD

A

Helicobacter pylori

37
Q

Salmonellosis

A

Salmonella spp.

38
Q

UTI

A

Escherichia coli

39
Q

Leptospirosis

A

Leptospira interrogans
Leptospira spp

40
Q

Genital herpes

A

HSV 1 , HSV 2

41
Q

Genital warts

A

HPV

42
Q

Syphilis

A

Treponema pallidum

43
Q

Candidiasis

A

Candida albicans

44
Q

Gonorrhea

A

Neisseria gonorrhea

45
Q

Chlamydia

A

Chlamydia trachomatis

46
Q

Common etiologies of Viral encephalitis

A
  • HSV1
  • West nile virus
  • Varicella zoster virus
  • Epstein Barr virus
  • Arthropod-borne virus
  • La cross virus
  • St Louis encephalitis virus
47
Q

less common etiologies of viral encephalitis

A
  • rabies
  • eastern equine virus
  • western equine virus
  • powassan virus
  • cytomegalovirus
  • enterovirus
  • Colorado tick
  • mumps
48
Q

Japanese encephalitis

A

Japanese encephalitis virus
- various species of birds: natural reservoir
- main maintenance/ amplifying host: pigs

49
Q

Rabies

A

Rhabdovirus

50
Q

Botulism

A

Clostridium botulinum
Found in:
soil, animal feces, water samples

Associated with: home-canned/vacuum-packed foods and preserved spice, smoked fish

Diseases:
infant botulism, food borne botulism, wound botulism, iatrogenic botulism

51
Q

Tetanus

A

Clostridium tetanii

  • Clostridium tetani
  • Anaerobic bacteria
  • Common bacteria in the guts therefore fecal matter contains tetanus

Transmission
- Contamination of any types of wound by feces, soil, and dust
- NOT BY RUST (rust is just oxidized iron) but can be contaminated by dust containing tetanus

52
Q

Scabies

A
  • Sarcoptes scabiei
53
Q

Pediculosis

A
  • Pediculus humanus capitis
  • Pediculus humanus corporis
  • Phthirus pubis
54
Q
A