Cohort | Vaccination prior to study entry | Arm | Study intervention: 4th vaccination dosea |
---|---|---|---|
Cohort 4 | BNT162b2 + BNT162b2 + BNT162b2 | 7 | BNT162b2 |
8 | mRNA-1273 | ||
Cohort 5 | BNT162b2 + BNT162b2 + mRNA-1273 | 9 | BNT162b2 |
10 | mRNA-1273 | ||
Cohort 6 | mRNA-1273 + mRNA-1273 + mRNA-1273 | 11 | BNT162b2 |
12 | mRNA-1273 | ||
Cohort 7 | mRNA-1273 + mRNA-1273 + BNT162b2 | 13 | BNT162b2 |
14 | mRNA-1273 | ||
Cohort 8 | ChAdOx-1-S + ChAdOx-1-S + BNT162b2 | 15 | BNT162b2 |
16 | mRNA-1273 | ||
Cohort 9 | ChAdOx-1-S + ChAdOx-1-S + mRNA-1273 | 17 | BNT162b2 |
18 | mRNA-1273 |