Reoviridae Flashcards
Reoviridae (meaning)
Respiratory Enteritic Orphan
Subfamilies
Spinareovirinae
Sedoreovirinae
Spinareovirinae genera
Orthoreo
Colti
Sedoreovirinae genera
Orbi
Rota
Seadorna
Morphology
segmented (10-12) dsRNA
icosahedral, double capsid
non enveloped
Resistance
Orthoreo, Rota: strong (56°C, pH 3)
Orbi, Colti: weaker
Biological properties
viral transcriptase
Orbi, Rota: in vitro difficult to propagate
Orthoreo: cytoplasmic inclusion bodies, rounding
Orbi, Colti – arboviruses (mosquitoes, ticks)
Antigenic properties
good antigens – cross reactions +/-
Diagnosis
isolation, experimental animals (Orbi)
IF, ccIEF, IEM (Rota)
Spinareovirinae (morphology)
spikes on the surface of the virions
Orthoreovirus genus (spp)
Mammalian reoviruses
Avian reoviruses
Mammalian reoviruses (clin signs)
pneumoenteritis
euryxen: calves, lambs, foals, dogs, humans, etc.
Mammalian reoviruses (A sp)
calves, lambs, foals, dogs, humans
Avian reoviruses (clin signs)
tenosynovitis
ranting-stunting syndrome, PEMS, „helicopter disease”
Sedoreovirinae (genera)
Orbivirus genus
Orbivirus genus (meaning)
orbi=circle
Orbivirus genus (dis)
African horse sickness Bluetongue Ibaraki disease Epizootic hemmorhagic disease Equine encephalosis
African horse sickness
Oedema, hemorrhage, pneumonia
Bluetongue
abortion, cyanosis, oedema
sheep and cattle
Ibaraki disease
cattle
abortion
Asia
Epizootic hemorrhagic disease
deer
North America
Rotavirus genus (meaning)
Rota=wheel
Rotavirus genus (spp)
A, B, C, D, and E species
Rotavirus genus (dis + A spp)
neonatal enteritis (+ E. coli) calves, piglets, children
Seadornavirus genus (meaning)
South eastern Asia dodeca RNA virus
Seadarnavirus genus (spp)
Banna virus
Kadipiro virus
Liao Ning virus
Seadarnavirus genus (dis)
human – influenza-like illness, encephalitis
zoononotic?
