The UK Health Security Agency (UKHSA) has published the most recent data on a prevalent winter illness spreading throughout the UK. This highly contagious virus has caused a surge in cases over the recent weeks.
By mid-January 2026, there has been a notable increase in norovirus cases within NHS hospitals, affecting over 1,000 patients daily. On average, around 136 hospital beds are being closed each day due to symptoms related to norovirus.
In the week ending January 18, 2026, the daily average of patients in hospitals exhibiting norovirus-like symptoms was 823. By January 18, over 1,017 adult hospital beds were occupied by individuals with the virus, compared to 830 beds the previous week. Recent data indicates a significant rise in norovirus activity, with laboratory reports in early 2026 approaching 48% of the previous season’s peak.
In an update on January 22, the UKHSA noted that norovirus activity has been on the rise in recent weeks, particularly affecting adults aged 65 and older. The total number of norovirus laboratory reports during the second and third weeks of 2026 was 60% higher than the average for the same period over the past five seasons.
According to a statement on the gov.uk website, norovirus activity has escalated in recent weeks following a decline during the Christmas holiday period, surpassing anticipated levels in the second week of the year. In the third week of 2026, there were 392 positive laboratory reports, representing 56.6% of the previous season’s peak of 693 reports.
The increase in norovirus cases, commonly known as the ‘vomiting bug,’ has strained the NHS, with many individuals experiencing symptoms like diarrhea and vomiting. Despite potential fluctuations in current figures, recent updates highlight the ongoing challenge this virus poses in hospitals compared to previous years. Hospitals are taking measures such as closing beds and isolating patients to contain the spread of the virus.
Although often referred to as a winter sickness, norovirus can occur at any time of the year. Symptoms typically manifest within 12 to 48 hours after exposure.
The primary symptoms of norovirus typically appear suddenly and include vomiting, nausea, and diarrhea, accompanied by other possible symptoms.
For individuals with norovirus, self-care at home is usually effective, with most people experiencing improvement within two to three days. Managing symptoms like diarrhea and vomiting at home is crucial, emphasizing the importance of staying hydrated.
While individuals are most contagious when sick, they can continue to spread the virus for weeks. It is advisable to avoid public spaces until fully recovered.
Seek medical attention if severe dehydration, prolonged symptoms exceeding three days, blood in stool, or high fever and severe pain occur.
Norovirus symptoms typically last one to three days, with lingering diarrhea in some cases. To prevent further spread, individuals should remain at home for at least 48 hours after symptoms have resolved completely, extending up to seven days in certain situations.
Due to its easy transmission and longevity on surfaces, thorough cleaning with bleach is recommended. It is essential to stay away from public areas until fully recovered, focusing on hydration, rest, and isolation from others, including avoiding crowded settings like workplaces, schools, care facilities, and hospitals.