Norovirus cases are at their highest level in a decade with the majority of infections occurring in care homes, according to the UK Health Security Agency (UKHSA).

The number of cases in England is 66% higher than average at this time of year with the biggest increase in those aged 65 and over.

Dr Lesley Larkin, surveillance lead, Gastrointestinal Infections and Food Safety (One Health) Division at UKHSA, said: “Norovirus levels are currently the highest we have seen at this time of year in over a decade. Most reported cases are in the over 65s and we’re also seeing a rise in reported outbreaks, particularly in care home settings.”

Most people will make a full recovery from the vomiting bug within two to three days but it is important to drink plenty of fluids to prevent dehydration, especially for the very young, elderly or those with weakened immune systems who are more at risk.

Regular handwashing with soap and water is the best way to prevent the spread of the virus.

People working with vulnerable people or food should stay at home and not to return to work until 48 hours after symptoms have cleared.

Bleach-based household cleaners or a combination of bleach and water should be used to disinfect potentially contaminated household surfaces and commonly used objects such as toilets, taps, telephones, door handles and kitchen surfaces.

People who are ill should avoid cooking and helping prepare meals for others until 48 hours after symptoms have cleared as norovirus can spread through food contaminated by the virus when food is handled by symptomatic people or infected individuals.

Contaminated clothing or bedding should be washed using detergent and at 60°C with disposable gloves used to handle contaminated items.

For further information go to the NHS website.