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UK Health Security Agency gov.uk

Latest UKHSA weekly winter virus surveillance data

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This weekly bulletin brings together the latest surveillance data, along with the latest public health advice for flu, COVID-19, Respiratory Syncytial Virus (RSV) and other viruses.

For respiratory viruses, in the week between 28 September and 4 October 2026:

  • Influenza activity increased and is circulating at baseline levels
  • COVID-19 activity increased and is circulating at low levels
  • Respiratory syncytial virus (RSV) activity remained low and is circulating at baseline levels

    • Flu surveillance data for week 40 (28 September and 4 October 2026): 

  • Influenza activity increased and is circulating at baseline levels
  • Flu positivity increased with a positivity rate of 6.5% compared with 5% on the previous week.
  • overall, flu hospitalisations were 1.97 per 100,000. This surveillance formally starts in week 40 so a comparison to the previous week is not possible.

    • COVID-19 surveillance data for week 40 (28 September and 4 October 2026): 

  • COVID-19 activity increased and is circulating at low levels
  • COVID-19 positivity increased with a weekly positivity rate of 9.1% compared with 7.9% in the previous week.
  • COVID-19 hospitalisations increased to 2.04 per 100,000 compared with 1.75 per 100,000 in the previous week
  • COVID-19 ICU admissions remained low at 0.06 per 100,000 compared with 0.05 per 100,000 in the previous week

    • Respiratory Syncytial Virus (RSV) surveillance data for week 40 (28 September and 4 October 2026): 

  • RSV activity remained low and is circulating at baseline levels
  • RSV positivity increased to 0.5% compared with 0.3% in the previous week.
  • the overall weekly hospital admission rate for RSV remained low at 0.11 per 100,000 compared with 0.13 per 100,000 in the previous week

    • Norovirus surveillance data between weeks 39 and 40 of 2026  

    Norovirus activity remains low and within expected levels for this time of year.

    This is an extract. The publication continues at the source.

    Contains public sector information licensed under the Open Government Licence v3.0. Licence

    Read the original at the source: https://www.gov.uk/government/news/latest-ukhsa-weekly-winter-virus-surveillance-data

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    UK Health Security Agency — imported from official source
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    https://www.gov.uk/government/organisations/uk-health-security-agency.atom ATOM
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    October 08, 2026 14:00
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    https://www.gov.uk/government/news/latest-ukhsa-weekly-winter-virus-surveillance-data#2...

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