Heartwater in Cattle and Small Ruminants

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AC/1788/17

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1. Which one of the following statements are correct? Heartwater is caused by: *

1 point

Cowdria ruminantium

Ehrlichia ruminantium

Amblyomma variegatum

Amblyomma hebraeum

Amblyomma astrion

2. Which one of the following statements are correct? The most important tick vector in Southern Africa is: *

1 point

Amblyomma variegatum

Amblyomma gemma

Amblyomma lepidum

Amblyomma hebraeum

Amblyomma pomposum

3. Which one of the following statements are correct? Heartwater has been known to cause mortality in: *

1 point

Springbok

Giraffe

Sable antelope

Steenbok

Lechbe

4. Which one of the following statements are correct? In ticks infection is transmitted: *

1 point

Transovarial

Transovarial and transtadially

Intestinally

Per cutaneous

Transtadially

5. Which one of the following statements are correct? The following clinical signs may be associated with heartwater: *

1 point

Opistothonus

Nystagmus

Paddling

Lateral recumbency

All of the above

6. Which one of the following statements are correct? Diagnosis is mostly confirmed by means of: *

1 point

Serology

Histology

Brain smear

IHC stains

Culture

7. Which one of the following statements are correct? Control is best achieved by: *

1 point

Vector control

Prophylactic antibiotic treatment

Vaccination

All the above

None of the above

8. Which one of the following statements are correct? Macroscopic post mortem findings include: *

1 point

Hydrothorax, hydropericardium

Abomasal ulcers

Cardiomyopathy

Hydranencephaly

Hydrocephalus

9. Which one of the following statements are correct? In brain smears organisms may still be visible: *

1 point

Up to 34 days at room temperature

Up to 10 days at room temperature

Up to 5 days at room temperature

Up to 2 days if refrigerated

Up to 2 days at room temperature

10. Which one of the following statements are correct? Engorged female ticks may lay as many as: *

1 point

15 eggs

150 eggs

15 000 eggs

150 000 eggs

1.5 million eggs

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