Enterobacteriaceae

Question 1

Enterobacteriaceae genera

Answer 1

Yersinia
Salmonella
Shigella

Question 2

Characteristics of Enterobacteriaceae

Answer 2

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

Question 3

Yersinia spp

Answer 3

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

Question 4

Yersinia pestis hosts

Answer 4

Rats
Mice
Voles

Question 5

Antigens produced by yersinia pestis

Answer 5

V and W antigens

Question 6

Transmission of Y. pestis

Answer 6

Bites of hosts

Question 7

Disease caused by Yersinia pestis

Answer 7

Plague/Black Death

Question 8

Major Forms of Plague

Answer 8

Bubonic Plague
Pneumonic Plague
Septicemia Plague

Question 9

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

Answer 9

Bubonic Plague

Question 10

signs and Symptoms of Bubonic Plague

Answer 10

High fever
Buboes - swollen lymph nodes

Question 11

Transmission of Bubonic Plague

Answer 11

Rat Flea (Xenopsylla cheopis)
Contact with tissue fluid

Question 12

Form of Plague where the blood carries bacteria to the lungs

Answer 12

Pneumonic Plague

Question 13

Form of Plague where the bacteria enters blood and multiply

Answer 13

Septicemic Plague

Question 14

Septicemic Plague is transmitted by

Answer 14

Flea bites
Contact w/ contaminated tissues and fluids

Question 15

Treatment of Yersinia pestis

Answer 15

Streptomycin
Gentamicin
Fluoroquinolones

Question 16

Characteristics of Salmonella

Answer 16

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

Question 17

Most virulent serovar of S. typhi

Answer 17

S. enterica serovar typhi

Question 18

S. typhi is spread through

Answer 18

Human feces

Question 19

Transmission of S. typhi

Answer 19

Oral route or contaminated food or drink

Question 20

Disease caused by S. enterica s. typhi

Answer 20

Typhoid fever
Enteric Fever
Typhus

Question 21

Diagnostic Test for Salmonella typhi

Answer 21

Widal Test

Question 22

DOC for S. typhi

Answer 22

Ceftriaxone
Azithromycin

Question 23

Shigella species

Answer 23

Shigella sonnel
S. boydii
S. flexneri
S. dysenteriae

Question 24

Shigella spp. characteristics

Answer 24

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

Question 25

Disease caused by Shigella sp.

Answer 25

Shigellosis dysentery

Question 26

Transmission of Shigella sp.

Answer 26

Through finger, food, feces, flies

Question 27

Most severe form of Shigella

Answer 27

S. dysenteriae

Question 28

Toxin produced by S. dysenteriae

Answer 28

Shiga Toxin

Question 29

S/S of dysentery

Answer 29

Blood Pus Bowel movement with straining and Tenesmus

Question 30

Treatment of Dysentery

Answer 30

Ciprofloxacin Ampicillin Doxycyline Trimethoprim Sulfamethoxazole (Bactrim)

Question 31

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

Answer 31

Shigella and Salmonella

Question 32

TSI agar is used detect fermentation of

Answer 32

Glucose Lactose Sucrose

Question 33

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

Answer 33

Gallbladder