21 pupils at Pontprennau Primary School have tested positive. (Image: No credit)
In Wales, younger pupils aged three to seven went back to school on February 22. Older primary children and those in secondary school exam years returned on March 15.
The news from the Welsh school has raised fears schools are a breeding ground for Covid.
One reader told WalesOnline: “Schools have always been the problem. Government knows this and always has! Keeping schools closed will cost them votes. Much easier to blame the public for not social distancing, It's not rocket science!”
School's opened in England last week. (Image: Getty)
Another said: “Unfortunately I can see another spike in cases as happened last time they went back to school. Difficult to ensure that four and five year olds social distance.”