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Norovirus Cases Surge in UK, Doubling Five-Year Average

A new dominant variant and waning immunity are driving a sharp increase in norovirus infections, with significant impacts on hospitals and vulnerable populations.

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Purple and magenta molecules forming the shape of norovirus in dark background. 
Photographer: Dragon Claws
Provider: Getty Images
Source: iStockphoto

Overview

  • Norovirus cases have risen by 41% in two weeks, reaching more than double the average level for this time of year.
  • The GII.17 variant has become the most dominant strain, possibly reducing immunity from previous infections.
  • Outbreaks in hospitals are 37% higher than the five-year average, creating additional pressure on the NHS.
  • A new mRNA vaccine from Moderna is entering final testing stages, aiming to prevent the virus's spread.
  • Health officials emphasize the importance of handwashing and avoiding contact with infected individuals to curb transmission.