Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, what his latest assessment of the (a) durability and (b) average duration of the booster covid-19 vaccine in holding immunity is.

Recent data on the Omicron variant shows that two to four weeks after a booster dose, vaccine effectiveness against symptomatic infection ranged from approximately 65 to 75%, reducing to 55 to 70% at five to nine weeks and 40 to 50% from 10 or more weeks. Vaccine effectiveness against hospitalisation is higher at approximately 95% at two to nine weeks and remaining at 90% at 10 weeks and over in those aged 65 years old and over who have received a booster dose.