It seems like the Oxford-AstraZeneca vaccine has been tested in UK, Brazil and South Africa. The same locations where the variant covid strains are originated. Unwittingly confirmed by this paragraph in this BBC article proving they’ve been testing the vaccine on 17K people guess where….
One dose protection
The UK, amid global debate and in sharp contrast to other countries, is prioritising giving the first dose to as many people as possible.
The idea is to save more lives by giving more people some protection, but it means people will have to wait around three months for the booster instead of three weeks.
This study – on 17,000 people in the UK, South Africa and Brazil – showed protection remained at 76% during the three months after the first dose.