| ECSO | enteric cytopathic swine orphan [virus] |
|---|---|
| ERC | endoscopic retrograde cholangiography; enteric cytopathic human orphan-rhino-coryza [virus]; erythro... |
| FECV | feline enteric coronavirus |
| HEV | health and environment; hemagglutinating encephalomyelitis virus; hepatitis E virus; hepato-encephal... |
| REO | respiratory enteric orphan [virus] |