Guidance

Referring influenza samples to UKHSA's respiratory virus unit

How to refer flu samples to UKHSA's respiratory virus unit for diagnosis, subtyping, antiviral resistance testing and surveillance.

From:
UK Health Security Agency
Published
3 November 2025

Documents

Referral of influenza samples to RVU, UKHSA Colindale, 2024 to 2025

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Appendix 1: Checklist for referral of influenza samples to RVU

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Details

Guidance for health professionals submitting influenza samples to the UK Health Security Agency’s (UKHSA) respiratory virus unit (RVU) for virological surveillance.

Influenza strain surveillance informs pandemic early warning systems, the global vaccination programme as well as providing information for empirical antiviral choice.

Updates to this page

Published 3 November 2025

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