UnHerd’s Freddie Sayers meets Martin Kulldorff After the Great Barrington Declaration was announced in 2020, Harvard Professor Martin Kulldorff suddenly emerged into the public consciousness as a controversial figure. Despite data showing his skepticism about lockdowns and vaccine mandates were ultimate legitimate, especially in his home country of Sweden, Professor Kulldorff was fired by Harvard. Why? UnHerd’s Freddie Sayers spoke to him to find out.