An urgent health alert has been issued as norovirus cases surge by a concerning 47% in just two weeks, with individuals over 65 being the worst affected. The UK Health Security Agency (UKHSA) is urging the public to adopt vital hygiene measures to stop the spread of this highly contagious bug. This significant jump in norovirus infections, recorded in the opening fortnight of 2026, represents a sharp increase compared to the preceding two-week period. Authorities are providing critical guidance on proper hygiene practices to stem the virus’s transmission, as outbreaks within healthcare facilities are also climbing. Experts have warned that pathogens like influenza and norovirus can behave erratically, with seasonal patterns shifting, making it crucial for everyone to adopt straightforward preventive measures. For both airborne and stomach-related viruses such as norovirus, consistent and thorough handwashing is paramount. It is vital to remember that alcohol-based hand sanitisers are not effective against norovirus. Therefore, regular cleansing with soap and warm water, combined with the use of bleach-containing products for surface disinfection, will significantly help prevent infections from proliferating throughout communities. Featured snippet paragraph: What is norovirus and how can it be prevented? Norovirus is a highly contagious stomach bug that causes vomiting and diarrhoea. The best way to prevent its spread is by washing hands thoroughly with soap and warm water, especially after using the toilet and before eating, and by cleaning contaminated surfaces with bleach-based products. The UKHSA has highlighted that incidents continue to peak amongst individuals aged 65 years and above, although overall activity remains within anticipated parameters. The rise in hospital outbreaks is a particular concern, underscoring the need for heightened vigilance. Simple steps can make a substantial difference in curbing the spread and protecting the most vulnerable members of our society. Amy Douglas, Lead Epidemiologist at UKHSA, commented on the situation: “We have seen a notable increase in cases in recent weeks among those aged 65 years and over, with more hospital outbreaks also being reported. While this is still within expected levels, there are simple steps that people can take to reduce the spread of norovirus and ensure levels don’t rise further.” Her statement emphasizes the proactive measures individuals can take. Washing your hands with soap and warm water and using bleach-based products to clean surfaces will also help stop infections from spreading. Alcohol gels do not kill norovirus so don’t rely on these alone. This point is critical for effective prevention. If you have diarrhoea and vomiting, it’s imperative to avoid returning to work, school, or nursery until at least 48 hours after your symptoms have completely stopped. Furthermore, refrain from preparing food for others during this period to prevent potential transmission. The same two-day rule applies to avoiding visits to hospitals and care homes. This measure is essential to prevent passing on the infection to individuals who are most vulnerable and may have compromised immune systems. UKHSA’s most recent surveillance figures indicate that flu, COVID-19, and RSV levels have continued to fall during the opening week of the year. While infections for all winter bugs remain within anticipated levels for this season, public adherence to preventive measures is encouraged. Ensuring indoor spaces are well-ventilated can significantly help curb the spread of respiratory infections like flu. If individuals exhibit symptoms, staying at home is the most responsible course of action to limit further transmission. The UKHSA advises that if symptomatic people need to venture out, they should consider wearing a face covering, especially when visiting vulnerable individuals. This added layer of protection can minimize the risk of spreading viruses. Those most susceptible to flu are entitled to a free flu jab on the NHS. This includes everyone over 65, pregnant women, children from the age of 2 years up to school year 11, and individuals with certain chronic health conditions. The RSV vaccine is also available to specific age groups and pregnant women, offering protection to newborns. Vaccination remains the most effective defence against severe illness and hospitalisation for high-risk individuals. Preliminary flu vaccine effectiveness data from UKHSA indicates that the flu jab is performing well against the most prevalent flu strain this year. It is crucial that eligible individuals accept the offer and get vaccinated to ensure they are protected for the remainder of the flu season. Dr Alex Allen, Consultant Epidemiologist at UKHSA, stated: “It’s encouraging to see that levels of flu and RSV have fallen for another week. But we mustn’t be complacent because our data from previous years tell us that the end of the flu season could still be some months away. Respiratory viruses are unpredictable but there are steps people can take to reduce the spread and ensure we continue on this downward trend – including taking up a vaccine if you haven’t yet.” Vaccine appointments are still available on the NHS national booking system. Those most at risk who haven’t yet had their vaccine should make sure they take it up now to ensure they are protected for the remainder of the season. RSV vaccination remains open year-round for pregnant women and any older adults aged 75 to 80 who haven’t yet had a dose. The surging norovirus cases highlight the ongoing importance of public health awareness and adherence to hygiene protocols. Staying informed and taking preventative measures is key to safeguarding individual and community health during this period of increased viral activity.
