Kawasaki norovirus hits UK as the latest strain of ‘winter vomiting bug’

A new strain of the winter vomiting bug, known as Kawasaki norovirus, is currently spreading across the UK, reaching unusually high levels for this time of year. According to the UK Health Security Agency (UKHSA), this strain, also known as GII.17, accounts for about 70 per cent of all cases of the virus. Reports indicate that norovirus activity between October 14 and 27 was 16 per cent higher than in the previous two-week period, with cases more than double the five-season average for the same timeframe, as reported by the Mirror.

The UKHSA has highlighted multiple factors that may have contributed to the rise in reported cases, including changes in epidemiology following the COVID-19 pandemic and adjustments in testing and reporting to national surveillance systems. Named after the Japanese city where it was first identified in 2014, the Kawasaki norovirus is causing concern due to its significant presence in current cases.

Norovirus, commonly known as the winter vomiting bug, is characterised by symptoms such as vomiting, diarrhoea, high temperature, abdominal pain, and aching limbs. It can lead to dehydration, particularly in young children, the elderly, and individuals with weakened immune systems. The virus spreads easily through close contact with infected individuals, touching contaminated surfaces or objects, and consuming food prepared by someone with the virus.

The NHS emphasises the importance of frequent hand washing with soap and water as the most effective way to prevent the spread of norovirus since alcohol-based hand sanitisers do not eliminate the virus. Amy Douglas, an epidemiologist at UKHSA, noted that the usual seasonal increase in norovirus cases has commenced earlier than in previous years, with a higher incidence of a specific strain this year. However, there is currently no indication that this strain leads to more severe illness.

To reduce the spread of norovirus, individuals are advised not to return to work, school, or nursery until 48 hours after symptoms have ceased and to avoid preparing food for others during this time. Moreover, visiting hospitals and care homes while unwell should be avoided to prevent transmitting the infection to vulnerable individuals. Good hygiene practices, such as washing hands with soap and warm water and using bleach-based products to clean surfaces, are recommended to help prevent infections from spreading as alcohol gels alone do not kill norovirus.

In conclusion, the emergence of the Kawasaki norovirus strain in the UK underscores the importance of proactive measures to limit the spread of the winter vomiting bug during this period of increased activity. Vigilance in adhering to hygiene protocols and staying informed about preventive strategies can aid in reducing the transmission of norovirus and safeguarding public health in the community.