The Nobel Prize in Medicine or Physiology 2023 is awarded equally between Katalin Karikó and Drew Weissman for their work in developing the mrna technology that has allowed the Covid vaccine to be developed at record speed.

Both work together at the Pennsylvania university. The prize sum is now 11 million kroner, but for that the foreign prize winners receive just under 1 million US dollars.

Two scientists have been awarded the 2023 Nobel prize in physiology or medicine for their contributions to RNA biology that enabled the development of mRNA vaccines that have changed the course of the Covid pandemic.

Katalin Karikó and Drew Weissman share the 11m Swedish kronor (£823,000) prize announced on Monday by the Royal Swedish Academy of Sciences in Stockholm.

The Nobel committee awarded the prize for their discoveries concerning nucleoside base modifications that enabled the development of effective mRNA vaccines against Covid.