![Real-world COVID-19 vaccine effectiveness against the Omicron BA.2 variant in a SARS-CoV-2 infection-naive population | Nature Medicine Real-world COVID-19 vaccine effectiveness against the Omicron BA.2 variant in a SARS-CoV-2 infection-naive population | Nature Medicine](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41591-023-02219-5/MediaObjects/41591_2023_2219_Fig1_HTML.png)
Real-world COVID-19 vaccine effectiveness against the Omicron BA.2 variant in a SARS-CoV-2 infection-naive population | Nature Medicine
![Public health impact of delaying second dose of BNT162b2 or mRNA-1273 covid-19 vaccine: simulation agent based modeling study | The BMJ Public health impact of delaying second dose of BNT162b2 or mRNA-1273 covid-19 vaccine: simulation agent based modeling study | The BMJ](https://www.bmj.com/content/bmj/373/bmj.n1087/F3.medium.jpg)
Public health impact of delaying second dose of BNT162b2 or mRNA-1273 covid-19 vaccine: simulation agent based modeling study | The BMJ
![Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2772653322000740-gr1.jpg)
Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect
![VERIFY: Why is absolute risk reduction in COVID-19 vaccines smaller than relative risk reduction? - YouTube VERIFY: Why is absolute risk reduction in COVID-19 vaccines smaller than relative risk reduction? - YouTube](https://i.ytimg.com/vi/1mbeVpSbms4/mqdefault.jpg)
VERIFY: Why is absolute risk reduction in COVID-19 vaccines smaller than relative risk reduction? - YouTube
![Short term, relative effectiveness of four doses versus three doses of BNT162b2 vaccine in people aged 60 years and older in Israel: retrospective, test negative, case-control study | The BMJ Short term, relative effectiveness of four doses versus three doses of BNT162b2 vaccine in people aged 60 years and older in Israel: retrospective, test negative, case-control study | The BMJ](https://www.bmj.com/content/bmj/377/bmj-2022-071113/F1.medium.jpg)
Short term, relative effectiveness of four doses versus three doses of BNT162b2 vaccine in people aged 60 years and older in Israel: retrospective, test negative, case-control study | The BMJ
Understanding and Communicating about COVID-19 Vaccine Efficacy, Effectiveness, and Equity | Understanding and Communicating about COVID-19 Vaccine Efficacy, Effectiveness, and Equity |The National Academies Press
![Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2772653322000740-gr2.jpg)
Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect
![The Daily Herald - Why Relative Risk Reduction, not Absolute Risk Reduction, is most often used in calculating vaccine efficacy The Daily Herald - Why Relative Risk Reduction, not Absolute Risk Reduction, is most often used in calculating vaccine efficacy](https://www.thedailyherald.sx/images/2021/06/24/Effi1_large.jpg)
The Daily Herald - Why Relative Risk Reduction, not Absolute Risk Reduction, is most often used in calculating vaccine efficacy
![Exponential growth, high prevalence of SARS-CoV-2, and vaccine effectiveness associated with the Delta variant | Science Exponential growth, high prevalence of SARS-CoV-2, and vaccine effectiveness associated with the Delta variant | Science](https://www.science.org/cms/10.1126/science.abl9551/asset/9233abaa-9229-44e5-a642-4f52fef1b488/assets/images/large/science.abl9551-f1.jpg)
Exponential growth, high prevalence of SARS-CoV-2, and vaccine effectiveness associated with the Delta variant | Science
![Optimizing vaccine allocation for COVID-19 vaccines shows the potential role of single-dose vaccination | Nature Communications Optimizing vaccine allocation for COVID-19 vaccines shows the potential role of single-dose vaccination | Nature Communications](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41467-021-23761-1/MediaObjects/41467_2021_23761_Fig1_HTML.png)
Optimizing vaccine allocation for COVID-19 vaccines shows the potential role of single-dose vaccination | Nature Communications
![Vaccine efficacy against severe COVID-19 in relation to delta variant (B.1.617.2) and time since second dose in patients in Scotland (REACT-SCOT): a case-control study - The Lancet Respiratory Medicine Vaccine efficacy against severe COVID-19 in relation to delta variant (B.1.617.2) and time since second dose in patients in Scotland (REACT-SCOT): a case-control study - The Lancet Respiratory Medicine](https://www.thelancet.com/cms/attachment/27a6c2ec-ed9d-4ca9-a10c-c2706a4ba4de/gr1_lrg.jpg)
Vaccine efficacy against severe COVID-19 in relation to delta variant (B.1.617.2) and time since second dose in patients in Scotland (REACT-SCOT): a case-control study - The Lancet Respiratory Medicine
Efficacy of live attenuated and inactivated influenza vaccines among children in rural India: A 2-year, randomized, triple-blind, placebo-controlled trial | PLOS Medicine
![Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect Relative risk reduction: Misinformative measure in clinical trials and COVID-19 vaccine efficacy - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2772653322000740-ga1.jpg)