I live in the UK, and as a resident of this Northern Isle, I have the stupendous privilege, for reasons that are a source of great international discontent, of having access to the Coronavirus vaccine now, rather than later.

I took advantage of this privilege yesterday morning, visiting a slick yet friendly operation in Central London to receive my “jab”, as the Prime Minister insists on calling it.

I walked away on a cloud, my mood lifted by the thought that I had, today, taken a meaningful and irrevocable step towards being free of the collective waking dream that we’ve all been living for the past 15 months.

I felt strong, fit, and healthy. At the school gate, I told other parents that I’d had the vaccine. Refusing to use the word “jab” is a satisfying little act of rebellion that has far more importance in the echo chamber of my mind than outside it.

That evening, around six, I felt a little more tired than usual. Perhaps a little out of sorts. A little later, around eight perhaps, during a phone call with a relative, I started to shake uncontrollably. Shivering is what it’s called, but the movements my body insisted on making were far wilder than the word suggests. I suddenly, abruptly, felt profoundly unwell. (spot the explosion of adverbs, I’m clearly not myself).