Table 1
Estimated incidences of myocarditis and pericarditis after COVID-19 vaccination in existing cohort studies.
| OUTCOME | ESTIMATED INCIDENCE | POPULATION | SOURCE |
|---|---|---|---|
| Vaccine: BNT162b2 | |||
| Myocarditis and pericarditis | 1.71 per 100,000 person-days1 | Males aged 18–25 | Wong et al. [21] |
| Myocarditis and pericarditis | 0.52 per 100,000 person-days1 | Females aged 18–25 | Wong et al. [21] |
| Myocarditis and myopericarditis | 1.5 per 100,000 individuals2 | Males (all ages) | Husby et al. [24] |
| Myocarditis and myopericarditis | 1.3 per 100,000 individuals2 | Females (all ages) | Husby et al. [24] |
| Myocarditis and myopericarditis | 1.6 per 100,000 individuals2 | Individuals aged 12–39 | Husby et al. [24] |
| Myocarditis and myopericarditis | 1.0 per 100,000 individuals2 | Individuals aged 12–17 | Husby et al. [24] |
| Myocarditis | IRR after first dose: 1.313 | All individuals | Patone et al. [5] |
| IRR after second dose: 1.303 | |||
| Vaccine: mRNA-1273 | |||
| Myocarditis and pericarditis | 2.17 per 100,000 person-days1 | Males aged 18–25 | Wong et al. [21] |
| Myocarditis and pericarditis | 0.45 per 100,000 person-days1 | Females aged 18–25 | Wong et al. [21] |
| Myocarditis and myopericarditis | 6.3 per 100,000 individuals2 | Males (all ages) | Husby et al. [24] |
| Myocarditis and myopericarditis | 2.0 per 100,000 individuals2 | Females (all ages) | Husby et al. [24] |
| Myocarditis and myopericarditis | 5.7 per 100,000 individuals2 | Individuals aged 12–39 | Husby et al. [24] |
| Myocarditis | IRR after first dose: 2.973 | All individuals | Patone et al. [5] |
| IRR after second dose: 9.843 | |||
| Vaccine: ChAdOx1 | |||
| Myocarditis and pericarditis | 0.18 per 100,000 individuals4 | All individuals | Rahman et al. [25] |
| Myocarditis | IRR after first dose: 1.293 | All individuals | Patone et al. [5] |
| IRR after second dose: 1.003 | |||
[i] 1 Estimate only for incidence after second dose of the vaccine; 2 Incidence per 100,000 vaccinated individuals within 28 days of vaccination; 3 Incidence Rate Ratios (IRRs) for 1–28 days following vaccination, included here as incidence estimates were not available; 4 Incidence per 100,000 vaccinated individuals within 21 days of vaccination.