NCIt definition : A genus of enveloped and spherical positive sense ssRNA viruses in the subfamily Coronavirinae
of the family Coronaviridae with a diameter of about 120 nm. Gammacoronaviruses have
a nonopartite, linear genome of 27-32 kb. Birds are the most common reservoir for
gammacoronaviruses.;
Alternative definition : CDISC: Any viral organism that is not assigned to the species level but can be assigned
to the Gammacoronavirus genus level.;