Astroviridae


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Astroviridae

(as″trŏ-vēr′ĭ′dē) [ astrovir(us) + -idea]
A family of spherical or star-shaped, single-stranded RNA viruses distributed worldwide. The virus causes epidemic viral gastroenteritis in adults and children. The incubation period has been estimated to be 3 to 4 days. The outbreaks are self-limiting and in the absence of coexisting pathogens, the intestinal signs and symptoms last 5 days or less. Treatment, if required, is supportive and directed to maintaining hydration and electrolyte balance.
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The family Astroviridae comprises 2 genera, Mamastrovirus and Avastrovirus, known to infect mammals and birds, respectively.
The implications of these findings were obscured by the fact that the brain homogenate also included sequences with partial analogy to viruses of the family Astroviridae and family Retroviridae.
Avian nephritis virus (ANV) as a new member of the family Astroviridae and construction of infectious ANV cDNA.
Five microliters of RNA/DNA eluate were tested by broad range reverse transcription-PCR (RT-PCR) assays for the whole subfamily Coronavirinae (16), the family Astroviridae (4), and the genus Mastadenovirus (18).