The call from Stockholm woke Katalin Karikó at her home outside Philadelphia. Initially in disbelief, in this interview with Adam Smith, recorded soon after she had learnt of the award of the Nobel Prize for discoveries that accelerated the introduction of vaccines for Covid-19, she recalls her journey from Hungary and some of the setbacks on the path to the mRNA vaccines. "10 years ago I was here in October, because I was kicked out and forced to retire!" Her advice is to not to dwell on the problems: "You have to focus on the things you can change."