Relentless work has 'paid off', says Irish-born professor who co-designed Covid vaccine

A vial of coronavirus vaccine developed by AstraZeneca and Oxford University.

The Irish-born professor who co-designed the AstraZeneca and Oxford University Covid vaccine has said that she has never worked as hard in her life.

AstraZeneca and Oxford University announced their jab is effective in preventing many people getting ill and it has been shown to work in different age groups, including the elderly.