People who have contracted the winter vomiting bug should try to avoid contact with other people, an expert has said.
Dr Martin Wiselka, a consultant in general medicine and infectious diseases, stated that the norovirus was "very, very infectious".
He explained that the vomiting bug was a virus that behaves in a similar way to influenza and constantly evolves, meaning that even those who have developed the condition in the past can still be affected by future strains.
"You only need to take in a few of those viruses to become ill yourself, so anyone who is vomiting - or even droplets from coughing - [could spread the virus]," Dr Wiselka said.
He advised people who have the virus to stay in their homes and make sure everything is as clean as possible.
According to BBC Health, the virus has an incubation period of between one and two days, after which vomiting, diarrhoea and fever can last for up to 48 hours.
Independent advice on private healthcare