Warning signs of ‘unpleasant bug’ as people urged to stay home

We're really in the trenches this January with a number of nasty bugs, viruses and illnesses to battle against.

And one of those is none other than the dreaded norovirus - AKA the winter vomiting disease - with the UK Health Security Agency (UKHSA) warning that cases have surged by approximately 47 percent in the first fortnight of 2026.

Meanwhile, NHS figures show, per the Independent, that an average of 823 hospital beds were filled each day last week by people with diarrhoea and vomiting or norovirus-like symptoms.

That's a pretty steep increase from the previous week’s average of 567 patients.

Now, it's important we're in the know about the early warning signs and symptoms of the unpleasant bug so we can best look after ourselves and protect those most vulnerable around us - hence why 'stay at home' warnings have been issued to Brits.

The UK is seeing a surge of norovirus cases the past few weeks (Getty Stock Images)

"Norovirus is a highly contagious virus that causes gastroenteritis, which is an inflammation of the stomach and intestines," explained Dr Chun Tang, GP at Pall Mall Medical. "It spreads easily through contaminated food, water, surfaces, or direct contact with an infected person."

The expert also warns that you can also get it by touching surfaces that have the virus on them and then putting your hands in your mouth, or by eating food that’s been handled by someone who has the virus.

What are the symptoms of norovirus?

Dr Ashwin Sharma, from online pharmacy MedExpress, notes that common symptoms of norovirus include nausea, diarrhoea, and vomiting.

"In some cases, individuals may also experience additional symptoms such as fever, headaches, and body aches," they add, highlighting the importance of monitoring these symptoms and seeking medical attention if they become severe or persistent."

Meanwhile, Dr Tang said: "The most important thing to watch for is dehydration, especially in young children or older adults, as it can happen quickly due to vomiting and diarrhoea."

"The key is to stay hydrated by drinking plenty of fluids, especially if you’re vomiting or have diarrhoea," the expert advised. "In extreme cases, where dehydration becomes a problem, some people may need intravenous fluids."

Good hygiene is key in helping prevent the spread of the highly contagious virus (Getty Stock Images)

While such symptoms can be very unpleasant, it usually gets better in about two to three days but Dr Sharma warns that most people can remain contagious for up to two weeks or more after symptoms have resolved.

The doctors also warn that norovirus is often mistakenly associated with the flu.

"Unlike respiratory viruses like influenza, norovirus specifically targets the gastrointestinal system," clarified Dr Sharma.

How to prevent the spread of norovirus?

To help prevent the spread, UKHSA has highlighted the importance of good hygiene practices to help stop the further spread.

Dr Tang explained: "The most important thing is washing your hands regularly with soap and water, especially after using the bathroom or before eating. Hand sanitisers aren’t as effective against norovirus, so good old-fashioned handwashing is key.

"Also, make sure to clean and disinfect surfaces, especially in kitchens and bathrooms, and wash fruits and vegetables thoroughly before eating.

"If someone around you has norovirus, it’s best to avoid direct contact and be extra on top with your hygiene. If symptoms continue, contact a GP."

You can find out more about norovirus on the official NHS website here.