Injecting millions of people with countless copies of a gene that instructs the body to produce a toxic protein might not seem very sensible. But it was hoped that this approach, the basis of the COVID vaccine, would help minimise damage caused by the protein – the ‘spike’ that the genetically engineered SARS-CoV-2 uses to invade our body cells – when we meet the actual virus.Last month we reported an American heart specialist’s finding that most of his patients showed biochemical changes signalling increased cardiovascular risk in the weeks following their COVID mRNA jab. Markers for inflammation, cell death and...