| Qualifier | serotype |
| Definition | serological variety of a species characterized by its antigenic properties |
| Value Format | "text" |
| Example | /serotype="B1" |
| Comment | used only with the source feature key; the Bacteriological Code recommends the use of the term 'serovar' instead of 'serotype' for the prokaryotes; see the International Code of Nomenclature of Bacteria (1990 Revision) Appendix 10.B "Infraspecific Terms". |