Norovirus cases rise in Wales: Parents urged to stay vigilant as children head back to school

Public Health Wales has issued a warning to parents and carers as norovirus cases rise sharply in the run-up to schools and nurseries reopening after the Christmas holidays.

The highly contagious stomach bug, known for causing diarrhoea and vomiting, has seen a 26% increase in cases across Wales in the week leading up to 22 December, with 49 cases reported compared to 39 the week before.

Between late September and late December, cases were 42% higher than the same period last year, prompting public health officials to emphasise the importance of hygiene and isolation to prevent further spread.

Wendi Shepherd, Deputy Director in Health Protection for Public Health Wales, explained the seasonal trend but noted the concerning increase compared with last winter.

“We expect to see an increase in norovirus cases at this time of year, as it is a common stomach bug that circulates during the winter months. However, we are concerned about an uptick in cases this winter compared with last year,” she said.

To reduce transmission, children with symptoms are advised to stay home from school or nursery not only while they are unwell but for 48 hours after symptoms have stopped.

Hand hygiene is also critical, with Ms Shepherd reminding parents that hand sanitiser is ineffective against the virus.

“Wash hands thoroughly with soap and warm water after using the toilet or preparing food, and remember that hand sanitiser is ineffective against norovirus.

Avoid sharing towels, and don’t prepare food for others if you have norovirus symptoms.”

Norovirus typically causes symptoms such as vomiting, diarrhoea, stomach cramps, and mild fever.

While the illness usually resolves within a few days, it is highly infectious and can easily spread in communal settings like schools and care homes.

Public health officials also noted that good handwashing hygiene helps prevent the spread of other seasonal viruses, including flu and Respiratory Syncytial Virus (RSV), which are also circulating this winter.

As schools and nurseries prepare to reopen, parents are encouraged to remain vigilant and prioritise hygiene to minimise the risk of outbreaks.

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