With more than 20 million Britons receiving the Oxford-AstraZeneca vaccine so far, there have been 79 cases of rare blood clots – and 19 deaths – linked to the jab.

The figures are equivalent to one in every 250,000 of those vaccinated suffering from a clot – and one in a million dying.

To put that one-in-a-million chance into proper perspective, here is how the risk of a deadly blood clot compares with some other things that don’t happen very often...