The UK Health Security Agency (UKHSA) has issued a warning about norovirus, often called the winter vomiting bug, after outbreaks on cruise ships carrying British holidaymakers. The agency said the virus spreads particularly easily in enclosed, close-contact environments such as cruise ships, hospitals, care homes, schools and nurseries.
An outbreak on the cruise ship Ambition in Bordeaux affected around 50 to 60 of the 1,700 passengers and crew, including more than 1,200 British and Irish holidaymakers. Passengers were confined to the vessel for health checks. In a separate incident, over 100 passengers and crew fell ill on another cruise liner, highlighting how quickly the bug can spread in shared facilities.
Norovirus causes sudden vomiting and diarrhoea, with symptoms appearing 12 to 48 hours after infection. Most people recover within two to three days without treatment, but the virus can be passed on before symptoms develop and after they clear. The UKHSA advises staying at home for at least 48 hours after symptoms stop and avoiding work, school, or preparing food for others.
The virus can survive on surfaces for days or weeks, making hygiene crucial. Alcohol hand sanitisers do not kill norovirus; thorough handwashing with soap and warm water is recommended. Those at higher risk include young children, the elderly, and people with weakened immune systems. There is no specific treatment, but drinking plenty of fluids helps prevent dehydration.
