Mlsp 5112 Micro - Spirochetes

22 Questions | By Meye1084 | Updated: Mar 20, 2022 | Attempts: 133

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1.

Which are general characteristics of Leptospira?
- A.
  
  Short tight spirals
- B.
  
  Easy to identify
- C.
  
  Requires dark field microscopy
- D.
  
  Answers 1 and 3
- E.
  
  All of the above
2.

Leptospirosis is common in rats and can infect humans by coming into contact with infected urine.
- A.
  
  True
- B.
  
  False
3.

Which is a complication of Leptospirosis and what can prevent it?
- A.
  
  Weil's disease, frequent hand washing
- B.
  
  Jarisch-Herxheimer reaction, low dose antibiotics
- C.
  
  Weil's disease, low dose antibiotics
- D.
  
  Jarisch-Herxheimer, no way to prevent
4.

What media is used to culture Leptospira?
- A.
  
  Middlebrook media
- B.
  
  PPLO broth
- C.
  
  Fletcher's semi-solid media
- D.
  
  Cell culture
5.

When doing serological testing of Leptospira, it is important to use killed organism as it is more sensitive than live organism.
- A.
  
  True
- B.
  
  False
6.

How is Borrelia transferred?
- A.
  
  Via lice or tick
- B.
  
  Via mucous membranes
- C.
  
  Via bodily fluids
7.

Which organism(s) cause Relapsing Fever?
- A.
  
  Borrelia recurrentis
- B.
  
  Borrelia hermsii
- C.
  
  Borrelia burgdorferi
- D.
  
  Answers 1 and 2
- E.
  
  All of the above
8.

What causes the recurrent fever episodes in Relapsing Fever?
- A.
  
  New infections
- B.
  
  Neutrophil reaction
- C.
  
  Eosinophilic reaction
- D.
  
  Antigenic variation of surface proteins
9.

What antibiotic(s) are used to treat Relapsing Fever?
- A.
  
  Amoxicillin
- B.
  
  Erythromycin
- C.
  
  Cephalosporin
- D.
  
  Tetracycline
10.

The adult Ixodes tick has the best transmission rates for Lyme Disease.
- A.
  
  True
- B.
  
  False
11.

OspA is an important protein for B.burgdorferi and the pathogenesis of Lyme Disease.
- A.
  
  True
- B.
  
  False
12.

Culture of B.burgdorferi is the primary method of identification in the laboratory.
- A.
  
  True
- B.
  
  False
13.

Which organism causes Syphilis.
- A.
  
  T. pertenue
- B.
  
  T. pallidum
- C.
  
  T. carateum
14.

Which phase(s) are associated with transplacental transfer of syphilis?
- A.
  
  Primary phase
- B.
  
  Secondary phase
- C.
  
  Tertiary phase
15.

Non-trepanemal serologic testing non-specific and is used as a screening test whereas trepanemal is specific and confirmatory.
- A.
  
  True
- B.
  
  False
16.

Why can't oral samples be used for direct microscopic examination for syphilis?
- A.
  
  Organism does not live in oral habitats
- B.
  
  Organism is anaerobic
- C.
  
  Contains normal flora treponemes
- D.
  
  All of the above
17.

A single dose of penicillin is sufficient to treat a syphilis infection.
- A.
  
  True, infection
- B.
  
  True, infection >1 year
18.

Which of the below are associated with Rat-bite fever.
- A.
  
  Short, thick, tightly coiled spirals
- B.
  
  Common in USA
- C.
  
  Not culturable
- D.
  
  Caused by Spirillium minor
- E.
  
  No serologic testing available