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Guidance

Influenza, COVID-19 and other respiratory viruses: sources of surveillance data

Sources of data for the surveillance systems used to monitor COVID-19, influenza and other seasonal respiratory viruses in England.

Updates to this page

From:
UK Health Security Agency
Published:
24 October 2022
Last updated:
4 June 2026
Show all updates

  1. Updated the section on SARS-CoV-2 lineages.

  2. Added information on the SARS-CoV-2 Immunity and Reinfection Evaluation (SIREN) study

  3. Added a new section on influenza virus genetic and antigenic characterisation and antiviral susceptibility surveillance.

  4. The data quality report has been updated this week to reflect changes in the Laboratory surveillance section.

  5. Added new section - Uses and users.

  6. Added quality information on mortality and for devolved administrations.

  7. Data quality report added.

  8. HARISS system included on the sources of surveillance data. Removed i-sense link.

  9. Updated the sources of surveillance data.

  10. First published.

Applies to England

Documents

Data quality report: national flu and COVID-19 surveillance report

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This page summarises the sources of data for the surveillance systems which are used to monitor COVID-19, influenza and other seasonal respiratory viruses in England.

Much of the data obtained through these surveillance systems is presented in the weekly national influenza and COVID-19 surveillance report.

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