Updated: 7:58, 11 Jul 2021 THE gap between Covid jabs is set to be halved to just four weeks to speed up the vaccination rollout, it has been reported. Downing Street has urged the Joint Committee on Vaccination and Immunisation to reduce the current eight-week interval to help tackle the surge in cases - particularly the Delta variant. 2 A woman receives a vaccine at the Chelsea FC pop up vaccine hub in LondonCredit: Getty If the move is approved, it will be a major boost for families hoping for a foreign getaway. Parents could have had both jabs before the end of the school summer holidays, meaning they won't have to quarantine on return to the UK from any of the green or amber list countries.