Reovirus, Calicivirus and Astrovirus.

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B.C.

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REOVIRUS are distinct segments of bicatenated RNA with no pericapsidic sheet and can have a double or triple capsid.
REOVIRUS multiply into cellular cytoplasma.
Coltivirus, a type of REOVIRUS, mainly causes Colorado tick fever and is associated with viremia and RBC circulations.
Orbivirus is a type of REOVIRUS that causes fever and is not associated with other particular consequences.
Reovirus consists of 3 serotypes from isolated intestinal/ respiratory systems material.
Respiratory enteric orphan virus is a type of Reovirus that is not certain pathogoly.
Rotavirus is a type of Reovirus that is resistant to external environment and has no envelope but has capsid.
The capsid of Rotavirus consists of 3 proteic subunits and it has 6 structural and 6 non- structural proteins.
NSP4 acts like a viral toxin in Rotavirus.
Correlation with celiac morbus is possible in Rotavirus.
Diagnosis of Reoviridae is done by virus finding.
Treatment of Reaviridae is done by correcting dehydration and electrolytic balance.
Vaccine for Rotavirus is available in animal attenuated virus or hybrid form.
Calicivirus includes the RNA with + polarity and has an isometric capsid.
Norwalk or Norovirus is a type of Calicivirus with 4 neotypes: G I- IV.
Pathogenesis of Norwalk or Norovirus (calicivirus) includes gastroenteritis with epidemic vomit, nausea, vomit, general discomfort, abdominal pain, and fever.
Sapovirus is a type of Norwalk or Norovirus that doesn't grow into cultures, only molecular biology.
Astrovirus are RNA with + polarity and include 8 serotypes in HAstV and HAstV- MLB1.
Astrovirus grow into enriched with trypsin renal cultures.
Pathogenesis of Astrovirus includes ubiquitarian gastroenteritis with diarrhea, general discomfort, abdominal pain, vomit, and fever.
Diagnosis of Astrovirus is done by immunoelctromicroscopic test, antigen search, and viral genome search in PCR.
Roavirus has oro- fecal transmission.
Astrovirus has oro- fecal transmission.