Clinical Bacteriology

Question 1

What does Mycobacterium Scrofulaceum cause

Answer 1

cervical lymphadenitis in children

Question 2

What the gram + diplococci that utilize Maltose?

Which ones don’t?

Answer 2

• N meningitidis

- N gonorrhoeae and Moraxella

Question 3

What are the fast lactose fermenters?

Answer 3

• Klebsiella
• E coli
• Enterobacter

Question 4

What are the slow lactose fermenters

Answer 4

• Citrobacter

- Serratia

Question 5

What bacteria have H2S production on TSI agar?

Answer 5

• Salmonella

- Proteus

Question 6

Describe Lactose fermenters on EMB agar?

Answer 6

• grow purple/black colonies

- E. coli grows colonies with a green sheen

Question 7

Describe the virulence factors of E coli and what each causes

Answer 7

• Fimbriae: cystitis and pyelonephritis (P-pili)
• K capsule: pneumonia and neonatal meningitis
• LPS endotoxin: septic shock

Question 8

What lob distinguished EHEC from other E coli?

Answer 8

Does NOT ferment sorbitol

Question 9

What temperature does campylobacter grow at

Answer 9

42 degrees

Question 10

What is the only spirochete that can be visualied using aniline dyes (Wright or Giemsa stain)

Answer 10

Borrelia

Question 11

Ehrlichiosis is transmitted by what

Answer 11

-Amblyomma (Lone star tick)

Question 12

Ehrlichiosis causes a rare rash. What cell type is involved?

Answer 12

-Monocytes with morulae (mulberry-like inclusion) in cytoplasm

Question 13

Anaplasmosis causes a rare rash. What cell type is involved?

Answer 13

-Granulocytes with morulae in cytoplasm

Question 14

Vector for anaplasmosis

Answer 14

tick