Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Pfizer created a ‘light-speed’ approach to meet the challenge of vaccinating the world against COVID-19. It involved developing new strategies for all aspects of vaccine development, from sourcing materials and scaling up manufacturing to transportation and dosing.
