Schoolchildren in Glasgow have cleaned up by claiming a world record for taking part in the largest simultaneous hand-washing lesson.
A total of 3,089 pupils from 36 primary schools in the city took part in the exercise last year and it has now been ratified by the Guinness Book of Records.
Led by 160 student nurses from Glasgow Caledonian University, the lesson took place at Glasgow Science Centre and was screened live in schools with pupils taking part.
Co-ordinated by the Glasgow City of Science partnership, it was designed to show children that good hand hygiene is the most effective way to prevent the spread of illnesses.
The previous record had been held in England, where 2,147 children from 21 schools took part in a lesson.
Professor Tracey Howe, deputy chair of Glasgow City of Science, said: "We are delighted that we have been successful in our record attempt and I would like to thank all the pupils, teachers and volunteers who helped us make it such a success.
"It was important for us to leave a legacy in all schools and funding from the Scottish Government Health Directorate allowed us to provide all participating schools with a pack containing everything they would need to enable every child in their school to undertake the lesson each year.
"Thanks to this project, thousands of school children have a better understanding of good hand hygiene."
Health improvement minister Jamie Hepburn joined pupils at the science centre today to collect the award.
He said: "It is vitally important that all children are made aware of the importance and benefits of washing their hands properly and by encouraging them to do so, it will ensure this practice becomes a lifelong habit.
"We would encourage all children to pass on everything they have learned to their families and friends to spread the word.
"On behalf of my ministerial colleagues and the Scottish Government, I would like to congratulate all the children and organisations who were involved in this project.
"This world-breaking record has been a fantastic achievement demonstrating again that Scotland leads the way in reducing infections."