‘Herd immunity’ is impossible without a vaccine
My great-grandfather did not fight in the war. He wasn’t a conscientious objector — he was a scientist helping to develop radar. It’s tempting to imagine family history repeating itself. I’m not alongside my colleagues on the NHS front line; instead I’ve been part of a large team at the Crick Institute, helping to develop tests for Sars-CoV-2, the causative agent of Covid-19. For the first phase of our struggle against this virus, we’ve had minimal testing capacity — no radar — and we’ve suffered the consequences. The director of our institute, Sir Paul Nurse, borrowed another wartime analogy when he imagined academic labs as a flotilla of ‘little ships’,