Appendix 1—table 9. Posterior estimates of Omicron BA.1 viral RNA clearance times by age and vaccination status.
Estimates are posterior means with 95% credible intervals. Low titer is ≤250 AU, high titer is >250 AU.
| Trajectory attribute | Variant/immune status | Estimate |
|---|---|---|
| Peak viral load (Ct) | Omicron:<30, unboosted | 25.6 (25, 26.3) |
| Omicron:<30, boosted | 25.8 (25.1, 26.4) | |
| Omicron: 30–50, unboosted | 25.3 (24.2, 26.5) | |
| Omicron: 30–50, boosted | 25.7 (25.2, 26.2) | |
| Omicron: 50+, unboosted | 25.5 (22.8, 27.9) | |
| Omicron: 50+, boosted | 25.5 (24.6, 26.3) | |
| Peak viral load (log10 copies/ml) | Omicron:<30, unboosted | 6.6 (6.4, 6.8) |
| Omicron:<30, boosted | 6.6 (6.4, 6.8) | |
| Omicron: 30–50, unboosted | 6.7 (6.4, 7) | |
| Omicron: 30–50, boosted | 6.6 (6.5, 6.7) | |
| Omicron: 50+, unboosted | 6.7 (6, 7.4) | |
| Omicron: 50+, boosted | 6.7 (6.5, 6.9) | |
| Proliferation time (days) | Omicron:<30, unboosted | 3.7 (3.4, 4.1) |
| Omicron:<30, boosted | 4.2 (3.8, 4.7) | |
| Omicron: 30–50, unboosted | 3.6 (3, 4.4) | |
| Omicron: 30–50, boosted | 4 (3.6, 4.3) | |
| Omicron: 50+, unboosted | 4.4 (3, 6.3) | |
| Omicron: 50+, boosted | 3.9 (3.4, 4.4) | |
| Clearance time (days) | Omicron:<30, unboosted | 6 (5.6, 6.5) |
| Omicron:<30, boosted | 7.2 (6.7, 7.7) | |
| Omicron: 30–50, unboosted | 6.4 (5.7, 7.2) | |
| Omicron: 30–50, boosted | 8.6 (8.1, 9.1) | |
| Omicron: 50+, unboosted | 8.7 (6.6, 11.2) | |
| Omicron: 50+, boosted | 9.6 (8.8, 10.6) |