Before they left, the receptionist delicately straightened my father’s collar. I knew then they would be just fine

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The food poisoning hit like a tsunami. I remember being out at a dumpling restaurant, grabbing a heap of napkins and just vomiting directly into them. I’ve never been sick like that in my life.

I was travelling in Xi’an, China, with my father, who was then aged 88 or 89. I really should have been in hospital but I didn’t feel I could leave my dear dad on his own. Instead I retreated to my hotel room, where I spent the night projectile vomiting. A horrible, embarrassing experience.