Question to the Department of Health and Social Care:

To ask Her Majesty's Government what assessment they have made of the antibody response in immunocompromised individuals following trials of a third dose of the COVID-19 vaccine.

The COV-BOOST study was commissioned by the Department through the National Institute for Health Research and funded by the Vaccine Taskforce, as part of the National Immunisation Schedule Evaluation Consortium.

This study launched on 19 May and initial findings are expected in September. The study will provide vital data on the impact of a third dose on patients’ immune responses and will help inform decisions by the Joint Committee on Vaccination and Immunisation on potential plans for a booster programme from autumn this year.