Sage says majority were likely infected shortly before or soon after jab, before immunity had time to develop
One in 25 people hospitalised with Covid-19 since December have had at least one dose of vaccine, with the majority infected shortly before or soon after vaccination – before immunity would have had time to develop.
However, few of those who developed symptoms, did so more than 2 weeks after receiving a first dose – indicating that the vaccines do help to prevent serious disease once they’ve had time to take effect.
