5 Enterbacteriaceae

Question 1

Features of enterbacteriaceae

Answer 1

Facultative anaerobes. 
All of them ferment glucose. 
Oxidase negative.
Reduce nitrate to nitrite. 
Grow on simple media. 
Motile (except for klebsiella & shigella).

Question 2

Enterbacteriacea lactose non fermenters

Answer 2

Salmonella, shigella, proteus, yersinia.

Question 3

IMVC for E.Coli

Answer 3

++ - -

Question 4

Virulence factors of E.coli

Answer 4

Pili or colonization factors
Capsule 
Endotoxin 
Enterotoxin 
Verotoxin

Question 5

Diseases caused by E.coli

Answer 5

UTI
hospital acquired infection
Neonatal meningitis 
Pneumonia and septicemia
Diarrhea

Question 6

(G.r) Antibiotics should not be given to Patient with enterohemorrhagic E. coli

Answer 6

Because they increase the risk of development of hemolytic uremic syndrome

Question 7

Indicators of fecal pollution of water

Answer 7

E.coli
Cl.perfiingens
E.faecalis

Question 8

(G.r) Klebsiella produce mucoid rose pink colonies

Answer 8

Due to production of wide capsule

Question 9

IMVC of klebsiella

Answer 9

• • ++

Question 10

Important cause of nosocomial infection

Answer 10

Klebsiella pneumonias

Question 11

Source of infection of enteric fever

Answer 11

Case or Carrier

Question 12

The Carrier in enteric fever may by

Answer 12

Intestinal or urinary carriers

Question 13

Treatment of s.typhoid and s.paratyphoid (enteric fever)

Answer 13

Chloramphenicol

Quinolones

Question 14

Prophylaxis of s.typhoid and s.paratyphoid (enteric fever)

Answer 14

Killed vaccine (TAB; against typhoid, paratyphoid A, and paratyphoid B)

Question 15

Responsible for food poisoning

Answer 15

S.typhimurium and s.enteritidis

Question 16

Treatment of food poisoning

Answer 16

Chloramphenicol

Quinolones

Question 17

Prophylaxis of food poisoning

Answer 17

Killed vaccine (TAB; against typhoid, paratyphoid A, and paratyphoid B)

Question 18

Diseases caused by shigella

Answer 18

Shigellosis and bacillary dysentery

Question 19

Mode of transmission of shigella

Answer 19

Faecal-oral route

Question 20

The main factors in transmission in shigella

Answer 20

Food, faeces, flies and fingers

Question 21

Shiga toxin is exotoxin produced by

Answer 21

Sh. Dysenteriae type 1

Question 22

Proteus vulgaris and proteus mirabilis cause diseases …

Answer 22

UTI , wound infection, and otitis media.

Question 23

the commonest human pathogen

of the Pseudomonas group.

Answer 23

Pseudomonas aeruginosa

Question 24

Diseases caused by P. aeruginosa:

Answer 24

UTI, wound and burn infection, otitis external and corneal ulcer in contact lens users.