Public Health England said cases can spread quickly among young children
Dozens of pupils are absent from a primary school in Cumbria due to an outbreak of norovirus.
About 70 of the 284 pupils at Dearham Primary School in Maryport are off sick after contracting the winter vomiting bug over the weekend.
A spokesman said they were following protocol and those affected have been asked to stay away from school for 48 hours until they are symptom-free.
Public Health England said it was investigating an outbreak among pupils.
Norovirus is one of the most common stomach bugs in the UK and causes diarrhoea, nausea and vomiting.
- Published15 December 2012
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