Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, whether any of the vials of (a) Pfizer and (b) Moderna covid-19 vaccines supplied to patients in the United Kingdom contained (i) variable and (ii) excessive levels of residual plasmid DNA.

All batches of the Pfizer and Moderna COVID-19 vaccines released in the United Kingdom to date have passed their release specifications for DNA levels. The specifications are set in line with their respective controlled manufacturing process and in accordance with, for example, World Health Organization guidance on the quality, safety, and efficacy of vaccines. No batches that have excessive levels of residual DNA have been released.