After Roald Dahl’s death, one of his notebooks was found to contain a few lines he had written on the day his seven-year-old daughter Olivia died. “Got to hospital. Walked in. Two doctors advanced on me from waiting room. How is she? I’m afraid it’s too late. I went into her room. Sheet was over her. Doctor said to nurse go out. Leave him alone. I kissed her. She was warm. I went out. ‘She is warm.’ I said to doctors in hall, ‘why is she so warm?’ ‘Of course,’ he said. I left.” Dahl’s daughter died of complications from measles, a disease for which there was no reliable vaccination at the time. Many years later, once such a vaccine was widely available, he wrote