In the news recently, we’ve heard from multiple Britons who’ve lost family members or sacrificed their own health to Covid’s not-really-vaccines. But anecdotes lack statistical heft. Sceptical viewers might too easily dismiss individual stories of the harms caused by the biggest inoculation rollout in history as freakish aberrations, mere coincidence (could relatives who happened to have been recently vaccinated really have died from something else?) or put it down to the cost of doing business at scale.