On June the 12th of last year the 27 health ministers of the European union signed off on a plan to buy vaccines on behalf of all the EU’s member countries. The aim was to secure enough doses to immunise all of its 450 million citizens. But the delivery and vaccination programme has lagged far behind countries like the UK and US. Tanya Beckett finds out why.

(Waiting to be vaccinated at Santa Maria Hospital in Lisbon, Portugal. Photo: Patricia de Melo Moreiro /Getty Images)