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Microbiology > Enterobacteriaceae > Flashcards

Enterobacteriaceae Flashcards

1
Q

Enterobacteriaceae genera

A

Yersinia
Salmonella
Shigella

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2
Q

Characteristics of Enterobacteriaceae

A

Non-lactose fermenters
Glucose fermenter
Facultative Anaerobe
Not members of normal flora
Pathogenic
Virulent

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3
Q

Yersinia spp

A

G (-), Short rod
Pleomorphic
Catalase +
Oxidase -

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4
Q

Yersinia pestis hosts

A

Rats
Mice
Voles

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5
Q

Antigens produced by yersinia pestis

A

V and W antigens

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6
Q

Transmission of Y. pestis

A

Bites of hosts

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7
Q

Disease caused by Yersinia pestis

A

Plague/Black Death

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8
Q

Major Forms of Plague

A

Bubonic Plague
Pneumonic Plague
Septicemia Plague

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9
Q

Most common form of Plague composed of 80-95% case

A

Bubonic Plague

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10
Q

signs and Symptoms of Bubonic Plague

A

High fever
Buboes - swollen lymph nodes

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11
Q

Transmission of Bubonic Plague

A

Rat Flea (Xenopsylla cheopis)
Contact with tissue fluid

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12
Q

Form of Plague where the blood carries bacteria to the lungs

A

Pneumonic Plague

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13
Q

Form of Plague where the bacteria enters blood and multiply

A

Septicemic Plague

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14
Q

Septicemic Plague is transmitted by

A

Flea bites
Contact w/ contaminated tissues and fluids

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15
Q

Treatment of Yersinia pestis

A

Streptomycin
Gentamicin
Fluoroquinolones

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16
Q

Characteristics of Salmonella

A

Peritrichous flagella
Glucose & Mannose fermenter w/o gas
Non-lactose & non-sucrose fermenter
H2S producer

17
Q

Most virulent serovar of S. typhi

A

S. enterica serovar typhi

18
Q

S. typhi is spread through

A

Human feces

19
Q

Transmission of S. typhi

A

Oral route or contaminated food or drink

20
Q

Disease caused by S. enterica s. typhi

A

Typhoid fever
Enteric Fever
Typhus

21
Q

Diagnostic Test for Salmonella typhi

A

Widal Test

22
Q

DOC for S. typhi

A

Ceftriaxone
Azithromycin

23
Q

Shigella species

A

Shigella sonnel
S. boydii
S. flexneri
S. dysenteriae

24
Q

Shigella spp. characteristics

A

Glucose fermenter
Non-lactose fermenter (S. sonnel)
Highly communicable disease

25
Q

Disease caused by Shigella sp.

A

Shigellosis dysentery

26
Q

Transmission of Shigella sp.

A

Through finger, food, feces, flies

27
Q

Most severe form of Shigella

A

S. dysenteriae

28
Q

Toxin produced by S. dysenteriae

A

Shiga Toxin

29
Q

S/S of dysentery

A

Blood
Pus
Bowel movement with straining and Tenesmus

30
Q

Treatment of Dysentery

A

Ciprofloxacin
Ampicillin
Doxycyline
Trimethoprim Sulfamethoxazole (Bactrim)

31
Q

Triple Sugar iron Agar differentiates ______ and ______ from other enteric gram - rods in stool cultures

A

Shigella and Salmonella

32
Q

TSI agar is used detect fermentation of

A

Glucose
Lactose
Sucrose

33
Q

Mary Mallon is an asymptomatic carrier of S. typhi and harbors the pathogen in

A

Gallbladder

Microbiology (17 decks)

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