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.

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.