Birnaviridae Flashcards
(10 cards)
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
