Topic 29: Parvoviridae (Parvus – small) and Circoviridae (circus – circle) -

Question 1

Topic 29: Parvoviridae (Parvus – small) and Circoviridae (circus – circle)
PARVOVIRIDAE:

Answer 1

* Genera: 
Parvovirinae: 
- Proto-, 
- Avi-…
Densovirinae: 
- Denso-, 
- Brevidenso-…

• Morphology: Linear ssDNA, self-priming, non-enveloped capsid.
• Resistance: VERY STRONG!
• Biological properties:
• Baltimore II – multiplication in dividing cells.
• Hemagglutination.
• Stenoxen.
• Antigenic properties:
  Very good antigens – long immunity.
• Diagnosis:
• Isolation in dividing cells.
• Exp. Canine parvovirus II – enteritis, -myocarditis.

Question 2

Topic 29: Parvoviridae (Parvus – small) and Circoviridae (circus – circle)
PARVOVIRIDAE:
Simple

Answer 2

• Parvovirinae:
  
  • Proto-,
  • Avi-…
• Densovirinae:
  
  • Denso-,
  • Brevidenso-…
• Linear ssDNA, self-priming, non-enveloped capsid.
• Very strong resistance
• Biological properties:
• Baltimore II – multiplication in dividing cells.
• Hemagglutination.
• Stenoxen.
• Very good antigens – long immunity.
• Diagnosis:
• Isolation in dividing cells.

(Exp. Canine parvovirus II – enteritis, -myocarditis)

Question 3

Topic 29: Parvoviridae (Parvus – small) and Circoviridae (circus – circle)
CIRCOVIRIDAE:

Answer 3

• Genera:
• Circo-,
• Gyrovirus genus.
• Morphology: Circular ssDNA, non-enveloped capsid.
• Resistance: VERY STRONG!
• Biological properties:
• Baltimore II.
• Stenoxen virus.
• Antigenic properties:
  Good antigens  Immunosuppression.
• Diagnosis:
• Circovirus genus:
  PCV1 And PCV2,
  beak and feathers disorder.
• Gyrovirus genus: Chicken anemia.

Question 4

Topic 29: Parvoviridae (Parvus – small) and Circoviridae (circus – circle)
CIRCOVIRIDAE:
Simple

Answer 4

• Circo-,
• Gyrovirus genus
• Circular ssDNA, non-enveloped capsid.
• VERY strong resistance
• Good antigens  Immunosuppression.
• Diagnosis:
• Circovirus genus:
  PCV1
  PCV2,
  Beak and feathers disorder.
• Gyrovirus genus:
  Chicken anemia.