It’s been a busy week in the Covid world – which, let’s face it, is the world we all live in.

To begin with, there was a smidgeon of good news. A US study published in the British Medical Journal suggests that delaying the interval between first and second doses of Covid-19 vaccines could, within the 18-65 age group, actually increase the level of protection against the virus – a finding which directly contradicts the advice given by both AstraZeneca and Pfizer when their vaccines were first announced at the end of last year.

Boris Johnson must have punched the air upon hearing this, for if the study is right it means that, by pure fluke, his Government’s decision to extend the gap between first and second jabs to 12 weeks, rather than the recommended three-to-four (in order to get as many people as possible at least partially protected), was right all along.