NCIt definition : A family of non-enveloped, spherical-shaped, capsid-enclosed viruses. The virus is
icosahedral in shape with characteristic star-like surface projections. The genome
is composed of a linear, non-segmented single-strand of positive sense RNA. Astroviridae
infect vertebrates and are a causative agent of gastroenteritis in humans.;
Alternative definition : CDISC: Any viral organism that can be assigned to the family Astroviridae.;