Introduction
• Fiona Godlee, editor in chief of The BMJ

Session 1: Historical and contemporary context of herd immunity
• David Robertson, Princeton University – Herd immunity: where it came from (GDS)
• George Davey Smith, University of Bristol – Immune ecology
• Mark Honigsbaum, City University of London – Heard in Whitehall: from swine flu parties to Covid-19
• Thomas House, The University of Manchester – Herd immunity thresholds; is it a useful concept?

Session 2: Basis of Population Immunity
• Jean-Francois Bach, Académie des sciences – What are the biological processes underlying population immunity?
• Ben Lopman, Emory University- Measuring population immunity
• Helen Ward, Imperial Collage London – What do we know about population immunity in England across all ages so far?
• 5.15 Jake Scott, Stanford University – Natural and vaccine induced immunity

Session 3: Endemic SARS-CoV-2
• Jeff Shaman, University of Columbia – When did it become clear that SARS-CoV-2 would become endemic?
• Elizabeth Halloran, Fred Hutchinson Cancer Research Center, – Transition to endemicity

Session 4: Global perspectives and the future
• Helena Legido-Quigley, National University of Singapore – South Asia
• Amanda Kvalsvig, University of Otago – New Zealand
• Shahid Jameel, Unversity of Oxford – Indian subcontinent