An investigation has been launched after 22 cases of E.coli food poisoning were discovered in schools in South Wales.
The cases, which are all in the Rhondda Cynon Taf, Merthyr Tydfil and Caerphilly areas, are believed to be linked and the victims are thought to be mostly, if not all, children from 12 different schools.
The 10 primary and two secondary schools have also suspended activities such as cooking and allowing pupils to play with Plasticine while the investigation continues.
Officers from the environmental health departments of the council areas affected and the NPHS for Wales are heading the probe into the outbreak.