Efficacy and effectiveness of coronavirus disease 2019 (COVID-19) vaccines approved in South Korea
| Vaccines | Efficacy following first dose | Dosage | Efficacy following second dose |
|---|---|---|---|
| AstraZeneca AZD1222 | - | 2 shots, 4 to 12 weeks apart | 76% (15 days) |
| Pfizer-BioNTech BNT162b2 | 52% (12 days) |
2 shots, 21 days apart | 95% (7 days) |
| Moderna mRNA-1273 | - | 2 shots, 28 days apart | 94.1% (14 days) |
| Johnson & Johnson Ad26.COV2.S | - | 1 shot | 72% |
aInformation for United Kingdom recipients on COVID-19 vaccine AstraZeneca (Regulation 174), Updated 19 July 2021. https://www.gov.uk/government/publications/regulatory-approval-of-covid-19-vaccine-astrazeneca/information-for-uk-recipients-on-covid-19-vaccine-astrazeneca.bhttps://www.bmj.com/content/371/bmj.m4826. chttps://www.cdc.gov/coronavirus/2019-ncov/vaccines/different-vaccines/Moderna.html. dhttps://www.nytimes.com/2021/02/24/science/johnson-johnson-covid-vaccine.html.