| Qualifier | serovar |
| Definition | serological variety of a species (usually a prokaryote) characterized by its antigenic properties |
| Value Format | "text" |
| Example | /serovar="O157:H7" |
| Comment | used only with the source feature key; the Bacteriological Code recommends the use of the term 'serovar' instead of 'serotype' for prokaryotes; see the International Code of Nomenclature of Bacteria (1990 Revision) Appendix 10.B "Infraspecific Terms". |