British Heart Foundation:
Is the Oxford vaccine effective against the South African strain of Covid?
A small study of 2,000 people in South Africa has shown that the Oxford/AstraZeneca vaccine offers minimal protection against mild cases of the South African variant.
The study, which was based people of an average age of 31, shows that protection may be as low as 10%. The research wasn’t able to determine whether it protects against serious illness or hospitalisation, because this group of people were at low risk of serious illness. More research is needed to see if the vaccine offers protection against more severe disease.