Bacteriology 2

Question 1

Gram (-) rod, non-lactose fermenting, oxidase (+)

Answer 1

Pseudomonas

Question 2

4 Gram (-) coccobacilli

Answer 2

H. influenzae
Pasteurella
Brucella
Bordetella

Question 3

2 comma-shaped, oxidase (+), Gram (-) bacteria. How to differentiate?

Answer 3

Campylobacter jejuni -grows at 42 deg C

Vibrio cholerae -grows on alkaline media

Question 4

3 oxidase (-), lactose non-fermenting, Gram (-) rods

Answer 4

Shigella
Salmonella
Proteus

Question 5

3 Gram (-) rods, fast lactose fermenters

Answer 5

Klebsiella
E. coli
Enterobacter

Question 6

2 Gram (-) cocci. How to differentiate?

Answer 6

N. meningitidis - ferments maltose

N. gonorrhoeae - does not ferment maltose

Question 7

Why isn’t there a gonococcal vaccine?

Answer 7

Rapid anitgenic variation of pilus.

Question 8

Tx for gonococcus

Answer 8

ceftriaxone

Question 9

Tx for meningococcus

Answer 9

penicillin g or ceftriaxone

Question 10

If you find malarial schizonts in the liver, what Tx do you prescribe?

Answer 10

Primaquine (P. vivax or P. ovale)