Two young children are recovering at home after being tested for the potentially deadly E.coli bug.
Public Health Wales and Conwy County Borough Council say both children, who visited childcare settings in the region, have been tested for the infection.
The affected childcare providers have closed voluntarily, and relevant children and staff are being screened for the infection as a precaution to prevent the risk of spread in these settings.
Public Health Wales say the source of infection is believed to be outside of the childcare settings.
A spokeswoman said both children are “recovering well at home”.