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Clinical Bacteriology > Enterobacteriaceae > Flashcards

Enterobacteriaceae Flashcards

1
Q

lactose fermenters

A

e. coli, kleb, enterobac

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2
Q

nlf

A

pmp, salmonella, edwardsiella, yersinia, shigells

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3
Q

LLF

A

hafnia, serratia, citrobacter, plesiomonas

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4
Q

salmonella nlf except

A

arizonae

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5
Q

shigella nlf except

A

sonnei

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6
Q

yersinia nlf except

A

enterocolitica

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7
Q

vf of e. coli

A

sex pili & adhesive fimbriae

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8
Q

vf of klebsiella

A

polysacch capsule

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9
Q

vf of salmonella

A

fimbriae

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10
Q

vf of hafnia

A

delayed citrate activity

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11
Q

bull’s eye colonies

A

y. enterocolitica

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12
Q

vf of y. enterocolitica

A

enterotoxin

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13
Q

which bacte causes pseudoappendicular syndrom

A

y. enterocolitica

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14
Q

which bacte causes mesenteric lymphadenitis in children

A

y. enterocolitica

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15
Q

which yersinia can penetrate gut lining

A

y. enterocolitica

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16
Q

which bacte appears as hammered copper colonies on bap

A

y. pestis

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17
Q

transport medium of y. pestis

A

cary blair

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18
Q

mot of y. pestis

A

rat fleece (xenopsylla cheopis)

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19
Q

causes bubonic plague

A

y. pestis

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20
Q

other name of y. pestis

A

plague bacillus

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21
Q

appearance of y pestis

A

safety pin

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22
Q

vf of y. pestis

A

fraction 1 (antiphagocytic), v protein, w lipoprotein

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23
Q

which bacte causes pneumonic plague

A

y. pestis

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24
Q

which bacte causes mesenteric lymphadenitis

A

y. pseudo tuberculosis

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25
Q

cultivation of yersinia

A

cefsulodin-irgasan-novobiocin

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26
Q

smears of yersinia

A

wayson and giemsa

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27
Q

appearance of yersinia on mac

A

colorless to peach

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28
Q

yersinia on emb

A

colorless to purple

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29
Q

yersinia on hea

A

salmon

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30
Q

yersinia on xld

A

yellow

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31
Q

yersinia on ssa

A

colorless

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32
Q

yersinia on tsi

A

yellow over orange

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33
Q

the only urease (-) among pmp

A

p. alcalifaciens

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34
Q

variable urease result in providencia

A

p. stuartii

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35
Q

very strong urease activity in providencia

A

p. rettgeri

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36
Q

diarrhea among travelers in providencia

A

p. rettgeri

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37
Q

diarrhea in children in providencia

A

p. alcalifaciens

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38
Q

most important proteus

A

p. mirabilis

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39
Q

most common isolate in proteus

A

p. mirabilis

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40
Q

p. mirabilis is susceptible to

A

ap, cepha, C

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41
Q

used in weil felix test

A

p. vulgaris

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42
Q

vf of p. mirabilis

A

ox k

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43
Q

vf of p. vulgaris

A

ox2 & ox19

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44
Q

causes struvite kidney stones

A

p. mirabilis

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45
Q

clear colonies on mac

A

p. mirabilis

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46
Q

resembles E. coli on plated media

A

c. freundii

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47
Q

septicemia in px w/ cervical cancer in citrobacter

A

braaki

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48
Q

Morphologically similar to E. coli Biochemically similar to Salmonella

A

freundii

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49
Q

non mannitol, catalase (-), onpg (-)

A

s. dysenteriae

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50
Q

mannitol, catalase (+), onpg (-)

A

flexneri, boydii

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51
Q

mannitol, catalase (+), onpg (+)

A

sonnei

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52
Q

Dysentery bacillus

A

s. dysenteriae

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53
Q

Shiga’s bacillus

A

dysenteriae

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54
Q

most virulent specie in shigella

A

dysenteriae

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55
Q

other names of s. flexneri

A

Strong’s bacillus
Gay-bowel syndrome

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56
Q

other names of s. boydii

A

Boyd’s bacillus
Newcastle-Manchester bacillus

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57
Q

other name of s. sonnei

A

Sonne/’s Duval bacillus

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58
Q

vf of s. dysenteriae

A

exotoxin - neurotoxin
enterotoxin - similar to cholera

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59
Q

serogroups of shigella spp

A

a - dysenteriae
b - flexneri
c - boydii
d - sonnei

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60
Q

cause of food poisoning

A

S. serotype Typhimurium

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61
Q

common name of enteritidis

A

Gardner’s Bacillus

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62
Q

serogroups of salmonella

A

a - paratyphi a
b - scottmeulleri
c - hirschfeldii
d - typhi

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63
Q

AKA Eberth’s bacillus

A

S. serotype Typhi

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64
Q

S. serotype Typhi is killed at __ for ___

A

killed at 60 deg for 15-20 mins

65
Q

S. serotype Typhi drug of choice for chronic carrier

A

Ampicillin for chronic carrier

66
Q

S. serotype Typhi inhibit phagocytosis by inactivating ______ system

A

adenylyl cyclase

67
Q

rose spots on skin, abdomen, and chest

A

S. serotype Typhi

67
Q

Complication of S. serotype Typhi

A

: psychosis

68
Q

S. serotype
Typhi on EMB & MAC

A
  • colorless
69
Q

S. serotype
Typhi on SSA

A
  • colorless w/ black center colonies
70
Q

S. serotype
Typhi on XLD

A
  • pink to red colonies w/ black center
71
Q

S. serotype
Typhi on HEA

A
  • green colonies w/ black center
72
Q

S. serotype
Typhi on BSA

A
  • green w/ black center
73
Q

S. serotype
Typhi on BGA

A
  • pink-white surrounded by brilliant red except S. typhi
74
Q

S. serotype
Typhi on Selenite F broth

A
  • enrichment medium for Salmonella
74
Q

blood culture of S. serotype
Typhi

A
  • 1st week; most reliable
75
Q

stool & urine culture of S. serotype
Typhi

A
  • 2nd week; carrier
76
Q

widal’s test S. serotype
Typhi

A
  • 3rd week
77
Q

S. serotype
Typhi titer O

A
  • active infection: >=1:160
77
Q

S. serotype
Typhi titer H

A
  • post vaccination: >=1:160
78
Q

S. serotype
Typhi TSI =

A

K/A no gas little H2S for S. typhi (mustache sulfide)

79
Q

antibiotic resistant

A

S. marcescens

79
Q

produces red pigment (w/ ___)

A

S. marcescens and rubidea

79
Q

malonate test of S. marcescens and rubidea

A

S. marcescens (-) S. rubidaea (+)

80
Q

rotten potato odor

A

s. odorifera

80
Q

Biogroup 1 -
Biogroup 2 -
sucrose, raffinose, & ornithine results

A

respiratory tract
isolated from blood and CSF
(+) B1 (-) B2

81
Q

most predominant isolate in enterobacter

A

cloacae

81
Q

other name of Pantoea agglomerans

A

enterobacter agglomerans

81
Q

the only urease +

A

gergoviae

82
Q

formerly Klebsiella aerogenes

A

enterobacter aerogenes

83
Q

causes necrotizing fasciitis

A

cronobacter sakazakii

83
Q

aka e. taylorae

A

cancergenus

83
Q

similar to cloacae

A

asburiae

83
Q

triple decarboxylase negative

A

agglomerans

83
Q

non pathogenic serratia

A

liquefaciens

84
Q

purple centers after extended period of time on MAC

A

cancergenus

85
Q

AKA K. pneumoniae K6

A

quasipneumoniae subsp. similipneumoniae

85
Q

kleb that is common in 80 yr olds

A

quasipneumoniae subsp. similipneumoniae

85
Q

kleb that produce ESBLs

A

quasipneumoniae subsp. similipneumoniae

85
Q

kleb that is hard to distinguish from pneumoniae

A

Raoultella planticola

85
Q

kleb that causes granulomatosis

A

k. pneumoniae subsp. rhinoscleromatis

85
Q

kleb that is biochemically inert

A

k. pneumoniae subsp. rhinoscleromatis

86
Q

the only indole positive kleb

A

oxytoca

86
Q

vf of K. oxytoca

A

heat labile cytotoxin

86
Q

causes antimicrobial-associated hemorrhagic colitis

A

K. oxytoca

86
Q

AKA Friedlander’s bacillus

A

K. pneumoniae

86
Q

AKA Bacillus mucosus capsulatus

A

K. pneumoniae

86
Q

reaction of K. pneumoniae for capsule

A

Neufeld-Quellung reaction

86
Q

no.2 cause of UTI

A

K. pneumoniae

86
Q

causes community acquired pneumonia

A

K. pneumoniae

86
Q

appearance of sputum of K. pneumoniae when it is the causative agent of comm. acquired pneumonia

A

currant jelly-like sputum

86
Q

kleb that is ampicillin resistant

A

K. pneumoniae

86
Q

meaning of KPC

A

K. pneumoniae carbapenemase producing strain

87
Q

meaning of ESBLs

A

extended spectrium beta lactamase

87
Q

causes atrophic rhinitis

A

K. pneumoniae subsp. ozaenae

87
Q

biochemically inactive

A

K. pneumoniae subsp. ozaenae

87
Q

presence of plasmid-mediated ESBLS

A

K. pneumoniae subsp. ozaenae

87
Q

beefy red ulcers

A

K. granulomatis

87
Q

other name of K. granulomatis

A

Calymmatbacterium granulomatis

87
Q

safety pin appearance kleb

A

K. granulomatis

87
Q

causes granuloma inguinale or donovanosis

A

K. granulomatis

88
Q

vf of UPEC

A

p pilus, type 1 fimbriae

89
Q

dominant resident of the colon (e.coli)

A

upec

89
Q

causes neonatal meningitis (e.coli)

A

MNEC

89
Q

AKA Alkalescens dispar

A

inactive e. coli

90
Q

attaching and effacing lesions

A

EPEC

90
Q

VF of EPEC

A

pathogenicity island, bundle forming pilus

91
Q

causes relapsing watery diarrhea and non-watery diarrhea in infants

A

EPEC

91
Q

serotypes of EPEC

A

0111:NM - 0111:H2 - 0114:H2 - 0114:NM - 055:NM - 055:H6

91
Q

Shigella like disease(e.coli)

A

EPEC

91
Q

vf of EIEC

A

invasin

91
Q

causes bloody diarrhea in poor countries & children

A

EIEC

91
Q

serotypes of EIEC

A

0143:NM - 0164:NM - 0124:H30

92
Q

Virulence test of of EIEC

A

sereny test

92
Q

sereny test can also be used for

A

shigella and L. monocytogenes

93
Q

VF of EAEC

A

AAF fimbriae, AFA/Dr adhesions, A IDA-1, Pathogenicity islands

93
Q

causes persistentpediatric diarrhea

A

EAEC

93
Q

serotype of EAEC

A

044:H18

94
Q

stacked brick pattern on cells

A

EGEC

94
Q

responsible for cellular adherence in EGEC

A

AggR gene

94
Q

causes persistent diarrhea in developing countries

A

EGEC

94
Q

montezuma’s revenge

A

ETEC

94
Q

VF of ETEC that is heat labile

A

LT

94
Q

VF OF ETEC that causes hypersecretion entotoxin through stimulating adenylyl cyclase

A

st

94
Q

serotypes of ETEC

A

06:NM - 025:NM - 027:NM - 06:H16 - 08:H9 - 063:H12

94
Q

high infective dose of ETEC

A

106-1010

94
Q

for adhesion of ETEC

A

colonization factor antigen

95
Q

protective mechanisms of ETEC

A

stomach acidity / Achlorhydia (HCl deficient)

95
Q

AKA hamburger disease

A

EHEC

95
Q

AKA Verocytotoxin E. coli

A

EHEC

95
Q

causes grossly bloody diarrhea

A

EHEC

95
Q

vf of EHEC that is the most important strain

A

verotoxin 1 & 2

95
Q

stx 1 of EHEC

A

shigella dysenteriae type 1 (verocytotoxin 1)

95
Q

stx 2 of EHEC

A

shigella-like toxin e. coli

95
Q

shiga toxin is a vf of?

A

EHEC

95
Q

causes hemorrhagic colitis caused by killing of cells in large intestine

A

EHEC

95
Q

most severe manifestation of EHEC

A

HUS

96
Q

serotypes of EHEC

A

0111:H2 - 0118:H2 - 0104:H21 - 0113:H21 - 0157:H7 - 026:H11 - 0111:H8 - 0157:NM

96
Q

what is the modified medium for EHEC

A

SMAC (SORBITOL)

Clinical Bacteriology (6 decks)

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