Development of the COVID-19 vaccine has been underway since early 2020, as soon as virus began spreading. Knowledge from other vaccines, like SARS and MERS, have been used in developing the COVID-19 vaccines.

Read more: https://t.co/qAOGzpFb5w https://t.co/lC9bzqI3T4

from http://twitter.com/NHSuk/status/1358339723152904194