| Nm | Neisseria meningitidis |
| Ng | Neisseria gonorrhoeae |
| Ct | Chlamydia trachomatis |
| STI | Sexually transmitted infection |
| NmUC | U.S. Neisseria meningitidis urethritis clade |
| cc | Clonal complex |
| WGS | Whole-genome sequencing |
| IMD | Invasive meningococcal disease |
| CPS | Capsular polysaccharide |
| cps | Capsule locus |
| MLST | Multi-locus sequence typing |
| cnl | Capsule null locus |
| eGISP | Enhanced Gonococcal Isolate Surveillance Program |