Birnaviridae Flashcards Preview

RUSVM Virology Spring17 > Birnaviridae > Flashcards

Flashcards in Birnaviridae Deck (10)
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1
Q

Infectious bursal disease virus belongs to what genus?

A

Avibirnavirus

2
Q

What shape are birnaviruses?

A

hexagonal

3
Q

Birnaviruses have ____ segments of linear, _____ stranded RNA

A

2 segments

double stranded

4
Q

Where do birnaviruses replicate in the cell?

A

cytoplasm

5
Q

IBD is an _____, highly _____ viral infection of ____ chickens.

A

ACUTE
highly contagious
young chickens

6
Q

What is the primary predilection site of IBD>

A

bursa fabricius

7
Q

What serotype is pathogenic to chickens?

A

Serotype 1

8
Q

What is the mortality rate of classic stains of IBD? Virulent strains?

A

Classic: 10-50 % mortality
Virulent: 50-100%

9
Q

T/F: IBD is not stable in nature

A

False - very stable in the environment

can survive after disinfectants are used

10
Q

MOT of IBD?

A

Direct contact and fecal-oral transmission