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3mo ago

UK Health Officials Warn of Second Norovirus Wave as Cases Reach Record Highs

Rising infections driven by a shift in dominant strains could leave those previously infected vulnerable to reinfection.

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Norovirus spreads easily through contact with someone who has the virus, as well as via contaminated surfaces. (Photo: Kateryna Kon/Science Photo Library)
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Overview

  • Norovirus cases in the UK are at their highest levels since 2014, with laboratory-confirmed cases nearly 30% higher than two weeks ago and more than double the five-season average.
  • A shift in dominant strains from GII.17 to GII.4 has increased reinfection risks, as prior immunity to one strain does not protect against others.
  • Health and social care settings, particularly hospitals and care homes, are experiencing the greatest impact, with older adults, young children, and immunocompromised individuals most at risk of severe symptoms.
  • Health officials emphasize that alcohol-based hand sanitizers are ineffective against norovirus; thorough handwashing with soap and water and cleaning surfaces with bleach-based products are key to preventing its spread.
  • The NHS reports an average of 1,134 hospital beds occupied daily by norovirus patients last week, nearly 150% higher than the same period last year, contributing to ongoing strain on healthcare services.