Table 2.
Approved COVID-19 vaccines and their efficacy.
| Sl. No. | Approved COVID-19 Vaccines | Efficacy | Reference |
|---|---|---|---|
| 1. | Pfizer–BioNTech | Overall efficacy 95% | [76] |
| 2. | Moderna vaccine (mRNA-1273) | Overall efficacy 94.5% | [39] |
| 3. | Oxford–AstraZeneca | Overall efficacy 70% (64% after 1st dose)(70.4% after 2nd doses) | [77] |
| 4. | Sputnik V | Overall efficacy 91.6% | [78,79] |
| 5. | Johnson & Johnson | Overall efficacy 66.3% (72% in the USA) | [80] |
| 6. | Ad5-nCoV | Overall efficacy 92% against severe COVID-19 | [81] |
| 7. | BBIBP-CorV | Severe COVID-19 showing efficacy 86–90% | [82] |
| 8. | ZF2001 | Overall efficacy of 90–96% | [83] |
| 9. | CoronaVac | Overall efficacy 83·5% (after 2nd dose) | [84] |
| 10. | BBV152 | Overall efficacy 78%,severe COVID-19 disease: 93.4% | [85] |
| 11. | EpiVacCorona | Overall efficacy 70–75% | [86] |
| 12. | CoviVac | Overall efficacy 83% (after 2nd dose) | [87,88] |