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Vaccination strategies and dosage of immunogens
| Delivery strategy | Group | First dose | Second dose | μg/dose | n |
|---|---|---|---|---|---|
| Control | C | PBS | PBS | ‐ | 5 |
| Monovalent | M1 | Wild type | Wild type | 7.5 | 5 |
| M2 | Delta | Delta | 7.5 | 5 | |
| M3 | Omicron | Omicron | 7.5 | 5 | |
| Sequential | S1 | Wild‐type | Delta | 7.5 | 5 |
| S2 | Delta | Wild type | 7.5 | 5 | |
| S3 | Delta | Omicron | 7.5 | 5 | |
| S4 | Omicron | Delta | 7.5 | 5 | |
| Divalent | D1 | Wild type/Delta | Wild type/Delta | 3.75 + 3.75 | 5 |
| D2 | Delta/Omicron | Delta/Omicron | 3.75 + 3.75 | 5 |
Abbreviation: PBS, phosphate‐buffered saline.
