The UK is today launching a 'mix and match' vaccine trial to test whether doses of the AstraZeneca and Pfizer vaccines can be effectively combined.
The trial - said to be the world's first - will investigate the immune responses of an initial jab of the Pfizer vaccine followed by a booster of AstraZeneca's, as well as vice versa, with intervals of 4 and 12 weeks.
Researchers said data on vaccinating people with the two different types of coronavirus vaccines could help understand whether jabs could be rolled out with greater flexibility around the world.
Recruitment for the study began today, with more than 800 participants expected to take part, researchers said, across eight different sites across England, including London, Birmingham
Read more on mirror.co.uk