Explainers

WHO's 'Vaccine Explained' series features illustrated articles on vaccine development and distribution. Learn more about vaccines from the earliest of research stages to their rollout in countries.

8 December 2020

How do vaccines work?

8 December 2020

How are vaccines developed?

8 December 2020

Manufacturing, safety and quality control of vaccines

12 January 2021

The different types of COVID-19 vaccines

12 January 2021

Access and allocation: how will there be fair and equitable allocation of limited supplies?

19 February 2021

Country readiness for COVID-19 vaccines

1 March 2021

The effects of virus variants on COVID-19 vaccines

31 March 2021

Safety of COVID-19 Vaccines

31 March 2021

Getting the COVID-19 Vaccine

31 March 2021

Side Effects of COVID-19 Vaccines

19 May 2021

How to talk about vaccines

14 July 2021

Vaccine efficacy, effectiveness and protection

Visit the COVID-19 vaccines page to access more resources

Assets and resources

COVID-19 Vaccines YouTube playlist