Covid-19 vaccine candidate, the government said in a statement on Sunday. The country now has access to a total of 357 million doses of vaccines from 7 different developers, it added.The new deal came a day after Prime Minister Boris Johnson named Nadhim Zahawi, a junior business minister, to be minister responsible for the deployment of COVID-19 vaccines.Britain now has access to enough doses of Moderna's vaccine candidate for around 3.5 million people.