Circoviridae

Question 1

Circoviridae, General characteristics

Answer 1

• Circulr, ssDNA, icosahedral, 17-26 nm
• NO ENVELOPE
• 2-3 proteins
• affects young dividing cells
• high resistance, in the environment infectious for months
• nucleic acid is also infectious

Question 2

Family circoviridae

Answer 2

Circovirus genus

• Porcine circovirus, PCV1 and 2
• Columbia circovirus (pidgeon) CoCV, PiCV
• Goose cricovius, GoCV
• Psitaacien beak and feather disease (PBFDV)

Gyrovirus
- Chicken infectious anemia virus CAV

Cylovirus, lots, mostly in environmental samples