Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, what assessment he has made of the proportion of the population who will need to undertake vaccination to ensure a positive effect on people who cannot undertake one for medical reasons.

The Joint Committee on Vaccination and Immunisation has stated that in order to interrupt transmission of COVID-19, modelling indicates that we would need to vaccinate a large proportion of the population with a vaccine which is highly effective at preventing infection. Currently it is not known whether any of the vaccines licensed or in development can prevent transmission.