E2 Order Chamydiaceae Flashcards Preview

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Flashcards in E2 Order Chamydiaceae Deck (29)
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1

What are the two important species in the family Chlamydiaceae?

1. Chlamydia (no species discussed)
2. Chlamydophila

2

What is the gram reaction of the family Chlamydiaceae? What is special about their cell walls?

Gram-negative
Cell walls lack peptidoglycan!

3

What is unique about the family Chlamydiaceae's metabolism?

Dependant of the host's ATP

4

What two forms does the family Chlamydiaceae exist as?

1. Elementary body
2. Reticulate body

5

Which form is infectious?

Elementary body

6

Which form replicates?

Reticulate body

7

What animals are affected by Chlamydophila psittaci?

Birds & HUMANS

8

What is important to remember about Chlamydophila psittaci infections?

It is a REPORTABLE disease!

9

What animal is least affected by Chlamydophila psittaci?

Chickens

10

What cells are infected by Chlamydophila psittaci?

1. Epithelial cells
2. Macrophages
3. Synovial cells

11

What is the route of exposure to Chlamydophila psittaci infection?

Inhalation of droplets or fecal dust

12

What is the most infectious body substance in animals with Chlamydophila psittaci infections?

Feces
(recovered birds shed organism for long periods)

13

What are a few clinical sign in turkeys of Chlamydophila psittaci infection?

1. Anorexia
2. Conjunctivitis +/- discharge
3. Green-yellow diarrhea

14

What are some of the most useful diagnostic tests for Chlamydophila psittaci infection?

1. Culture in chicken embryos (cecal swab)
2. Stained smears of infective tissue
3. PCR

15

Is there a vaccine available for Chlamydophila psittaci in Turkeys?

No

16

What bacteria is the major cause of abortions in sheep & cattle?

Chlamydophila abortus!

17

What stage abortions occur with Chlamydophila abortus infection?

Late-term abortions

18

Is there a vaccine for Chlamydophila abortus?

Yes!

19

How does Chlamydophila abortus infection affect future fertility?

Animal remains fertile

20

Does Chlamydophila abortus infect humans?

No

21

What species are infected with Chlamydophila pecorum?

1. Sheep & goats
2. Cattle

22

What type of disease does infection with Chlamydophila pecorum cause?

1. Polyarthritis
2. Conjunctivitis
3. Diarrhea in young calves only

23

What age of animals are more affected by Chlamydophila pecorum infection? What animal was recently discovered to be susceptible to infection?

Young calves and lambs
Koalas!

24

What is the usual outcome of infection with pecorum in ruminants?

Spontaneous recovery
(except in very young calves)

25

What clinical signs are caused by Chlamydophila felis infections in cats?

1. Conjunctivitis
2. Pneumonitis

26

What age of animals are most susceptible to infection with Chlamydophila felis?

Young kittens

27

Is there a vaccine against Chlamydophila felis?

Yes
(reduces severity of infection)

28

How common is Chlamydophila felis infection in cats?

10-45% are seropositive

29

What can be permanently damaged in cats infected with Chlamydophila felis?

Corneal scarring can occur