| ORF | Open reading frame |
| S | Spike |
| E | Envelope |
| M | Membrane |
| N | Nucleocapsid |
| WHO | World Health Organization |
| VBM | Variant Being Monitored |
| VOF | Variant of Concern |
| VOF | Variant of Concern |
| VOI | Variant of Interest |
| RBD | Receptor binding domain |
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