Winter vomiting bug - Norovirus

Noroviruses (family Caliciviridae) are a group of related, single-stranded RNA, non-enveloped viruses that cause acute gastroenteritis in humans.
The most common symptoms of acute gastroenteritis are diarrhea, vomiting (winter vomiting bug), and stomach pain. Norovirus (NoV) is the genus name for the group of viruses formerly described as “Norwalk-like viruses” (NLV).

Noroviruses spread from person to person, through contaminated food, water, air, and by touching contaminated surfaces. Outbreaks can happen to people of all ages and in a variety of settings.

In Ireland, the Regency Hotel in Drumcondra, north Dublin, had to shut down its food and beverage operation, for 80 to 100 patrons became ill with vomiting and diarrhoea.
Winter vomiting bug shut down Dublin’s Regency Hotel - National News - Independent.ie

In England, NHS North Essex is warning residents that the bug, called norovirus, is set to make a seasonal appearance.
Avoid dreaded winter vomiting bug (From Maldon and Burnham Standard)

In Edinburgh, Balgreen Primary School, which has about 348 children, will be closed all day on Friday while the deep clean takes place, after 52 pupils contracted a vomiting bug.
BBC News - Vomiting bug closes Edinburgh school

NHS infoms you : You can get norovirus several times because the virus is always changing, which means your body cannot build up resistance to it.
Check their video on Norovirus and how to reduce your risk of getting it.
Norovirus Infections - NHS Choices

A PRIMARY school headteacher has warned parents to be extra cautious after a pupil was confirmed to have norovirus.
Primary head sends letter warning of spread of virus - Education - Scotsman.com