ASTROVIRIDAE Flashcards
Astroviridae is non-enveloped. True or False?
True
Describe the morphology of Astroviridae.
- Small, star-shaped surface appearance
Describe the genome of Astroviridae.
Single-stranded, positive-sense RNA
Astrovirida is not stable in the environment, requiring such enzymes for proliferation. True or False?
False
Astroviridae is second only to ____ in importance as the cause of gastroenteritis in young children.
rotavirus
What are the 2 genus of Astroviridae?
- Avastrovirus
- Mamastrovirus
Avastrovirus 1-3 causes what ds.?
Enteric ds. in turkeys, ducks, chickens, and guinea fowl
Give the clinical signs induced by Avastrovirus 1-3.
- Enteritis and stunting, diarrhea, listlessness, litter eating, nervousness
- Severe multifactorial variant disease termed “poult enteritis and mortality
syndrome” also been described
At necropsy of an animal infected by Avastrovirus 1-3, what are characteristically dilated and fluid filled?
Intestines esp. ceca
What is the histopathological signs of an animal infected with Avastrovirus 1-3?
Mild hyperplasia of crypt enterocytes
What are the diagnostic methods for Avastrovirus 1-3?
- Electron microscopy
- RT-PCR
What is the unique clinical manifestations of Mink Enteric Astrovirus?
Sticky or wet kits in minks
Give other viruses under Genus Avastrovirus.
- Avian Nephritis Astrovirus
- Avian Hepatitis Astrovirus
Astrovirus Encephalomyelitis of Mink and Cattle belongs to what genus?
Mamastrovirus
