Is the UK right to delay the second dose of the covid-19 vaccines?

By Clare Wilson

IN A bid to vaccinate as many people as fast as possible, the UK is taking an unorthodox strategy against covid-19. The country is eking out its vaccine supply by making most people wait three months to get their second dose of the two-shot regimen.

Both vaccines currently being used in the UK were intended to be given over much shorter timescales. Changing a medicine’s dosing schedule so dramatically is unprecedented, and some experts have branded it a dangerous gamble, putting lives …