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Rechallenge data available in Vigibase, the WHO global pharmacovigilance database.
| Rechallenge | Tozinameran | Elasomeran | ChAdOx1 nCoV-19 | Ad26.CoV2.S | Total |
|---|---|---|---|---|---|
| Positive | 14 | 4 | 1 | 1 | 20 |
| Negative | 20 | 1 | 8 | – | 29 |
| Rate (95% CI) of positive rechallenge | 41 (25–59) | 80 (28–99) | 11 (0–48) | – | 41 (27–56) |
CI: confidence interval; WHO: World Health Organization.
