Explanations
Norovirus: What you need to know

6th March 2023
Norovirus is a gastrointestinal illness, which causes vomiting and diarrhoea. It is caused by a very common and highly contagious virus. It spreads rapidly in closed environments such as hospitals and care homes. It is sometimes known as 'winter vomiting bug' because cases peak in winter. This is likely due to:
- people spending more time indoors in close proximity to one another, which increases the likelihood of transmission
- the virus is more likely to be able to survive outside of the body in colder temperatures
As with all viral infections, the youngest and oldest members of our community and those that are vulnerable due to pre-existing illness or a weakened immune system are more likely to be infected and have a more serious infection.
Excellent personal hygiene and limiting contact when you have symptoms are the best way to reduce the spread of norovirus and for most people, the infection lasts just 48 hours.
#Norovirus is highly infectious & is easily spread through contact with someone with the infection or with contaminated surfaces. Amy Douglas, an epidemiologist, explains what to do if you're experiencing symptoms & how to help stop norovirus spreading. https://t.co/Vou2aFmPXn pic.twitter.com/FS1Xih87NY
— UK Health Security Agency (@UKHSA) February 10, 2023
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