24. Family Rickettsiaceae Flashcards Preview

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Flashcards in 24. Family Rickettsiaceae Deck (10):
1

Spp. under the genus Orientia

Orientia tsutsugamushi

Formerly classified as Rickettsia

2

Microscopic appearance of Rickettsia

Gram-negative-like cell wall

Contains LPS

3

Rickettsia has no apparent genes for

Sugar metabolism
Lipid synthesis
Amino acid synthesis

4

Groups of Rickettsia according to antigens

Spotted fever group
Typhus group
Scrub typhus group

5

Disease caused by Rickettsia

Rocky Mountain Spotted Fever (RMSF)

6

Principal reservoir of R. rickettsii

Hard tick

7

MOT of RMSF

Bite of an infected tick

8

Major laboratory test for Rickettsia

Serology:
- Weil-Felix test
- Immunofluroscent antibody (IFA) reagent

9

Diagnosis for Rickettsia in skin biopsies

Fluorescent
PCR

10

Genera under the Family Rickettsiaceae

Orientia
Rickettsia