More than two million Covid booster jabs have been given out, NHS England has said, amid concern about how the health service will cope this winter.
England’s chief nursing officer, Ruth May, said it was “fantastic” that people were topping up protection.
The over-50s and people with health conditions are among those being offered a third jab.
Third jabs are being given to people in certain groups at least six months after their second dose.
Ms May said so many people had received a booster shot in England because of the “incredible efforts of NHS staff”.