Chapter 15

Question 1

Which enteric bacteria are considered opportunistic?

Answer 1

Serratia marcescens, E aerogenes

Question 2

What are the most frequent sites of infection by Enterobacteria?

Answer 2

Urinary bladder, biliary tract, abdominal cavity, but can occur at every anatomical site (meninges, bloodstream, prostate, long, bone)

Question 3

Which pathologies are associated with E coli?

Answer 3

UTI, E coli-associated diarrheal disease, sepsis, meningitis

Question 4

Which bacteria is the most common caus of the 1st UTI in young women?

Answer 4

E coli

Question 5

Symptoms of UTI

Answer 5

Frequent urination, dysuria, hematuria, pyuria

Question 6

What is flank pain?

Answer 6

Occurs in upper tract infections. Discomfort in your upper abdomen or back and sides. It develops in the area below the ribs and above the pelvis. Usually, the pain is worse on one side of your body.

Question 7

O antigenic types with elaborated virulence factors that facilitate colonization and infects:

Answer 7

Uropathogenic E coli

Question 8

Uropathogenic E coli:

Answer 8

O antigenic types with elaborated virulence factors that facilitate colonization and infects:

Question 9

Strains for pyelonephritis:

Answer 9

express K antigen, specific pilus, P fimbriae (binds to P blood group anitgen)

Question 10

E coli O25b/ST131 is resistant to:

Answer 10

beta-lactam resistance, fluoroquinolones, aminoglycosides; mediated by plasmids

Question 11

What are 2 factors in EPEC?

Answer 11

Bundle forming pilus, encoded by plasmid EPEC adherence factor and chromosomal locus of enterocyte effacement.

Question 12

Primary age group of EPEC:

Answer 12

Infants

Question 13

Symptoms of EPEC diarrhea:

Answer 13

severe watery diarrhea, vomiting, fever

Question 14

How are agents of EPEC differentiated?

Answer 14

O antigen and H antigen (less common) typing

Question 15

Treatment of EPEC diarrhea:

Answer 15

usually self-limiting, antibiotics used for shortening/treating chronic cases