A vomiting and diarrhoea bug is circulating through the Hawke's Bay community and the District Health Board is urging parents to keep sick children home.
Medical Officer of Health Rachel Eyre said the population health team was investigating a number of vomiting and diarrhoea outbreaks in the community as far north as Wairoa.
Dr Eyre said symptoms appeared to ease after about 12 hours with most people experiencing vomiting, nausea, abdominal pain and general aches and pains.
"While there didn't appear to be any cause for the outbreak, which seemed to be widespread throughout Hawke's Bay, it was most likely being spread from person to person and likely to be a virus.
Laboratory results to confirm if it was a virus were expected later this week," she said.