You’ve had the vaccine already? Fantastic. Me too. [Pause] Which one did you get? Oh right, well look that’s great. Me? Actually, I got the Pfizer jab [almost imperceptible smile]. But, look, they are both great — 80 per cent, 90 per cent, what’s the difference? Well 10 per cent, obviously, but the key thing is we are basically protected. You a little more basically than me but both still ready to book a summer holiday, eh?

Did you get much of a reaction? I heard that the AZ jab can make you feel a bit rough for a day or two. My wife’s sister got AstraZeneca and felt awful for two days. Her husband got Pfizer three days later and he’s just climbed Annapurna [slightly less imperceptible smile].

Across the country, this is the conversation among people of a certain age. If not about themselves, then about their parents. It is the first question anyone asks as soon as you return from your appointment. Until we get the jab, we are just thrilled to receive the offer of a date, but the second we’re vaccinated, kapow, we are suddenly pharmacologists.