Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, whether the SIREN research study by Public Health England into covid-19 immunity covers immunity through antibodies and T cells; and if he will publish the latest interim findings.

The SARS-CoV-2 Immunity and REinfection EvaluatioN (SIREN) study collects information on polymerase chain reaction and antibody results from healthcare workers who have given their consent for participation among participating sites across the United Kingdom.

Information related to T-cell response will be assessed through a sub-study of approximately 2,500 participants from the UK Immunology Consortium funded by UK Research and Innovation. The interim analysis of the data is underway and will be published in January 2021.