An outbreak of Kawasaki norovirus infections is causing growing concern in the UK, prompting hospital authorities to issue urgent warnings. They are advising people to limit hospital visits to prevent further spread of the highly contagious virus, commonly known as the “winter vomiting bug.” This virus has led to a significant rise in cases, with patients experiencing sudden and severe vomiting and diarrhea. Reports indicate that in the first seven weeks of 2025 alone, 400 cases have been recorded, and health officials are on high alert as the new GII.17 variant continues to spread.
The British Health and Safety Executive (HSE) has highlighted the alarming situation, warning that the surge in cases is placing immense strain on an already overburdened winter healthcare system. However, this outbreak is not limited to the UK—similar spikes in infections have been observed in the United States, raising concerns about a potential international spread. Public health experts are emphasizing the importance of strict hygiene measures, frequent handwashing, and staying home when sick to help contain the virus.
A spokesperson for HSE told The Sun:
“During the winter of 2024-2025, norovirus activity has significantly increased across the northern hemisphere.”
“This rise has been partly driven by the emergence of a new norovirus variant—GII.17.”
Experts warn that since this is a new strain of the virus, people will have little to no immunity, making them more susceptible to infection.
The outbreak initially gained attention in December 2024 when a surge in norovirus cases was reported in Ireland. Since then, similar increases have been observed across the UK, other European nations, and the United States. With the virus continuing to spread, health officials urge the public to follow strict hygiene protocols and remain vigilant.