A third teenager from the north of Scotland has contracted meningitis, it has been confirmed.
Health Protection Scotland said that the child was part of the group which attended the huge jamboree event in Japan last week.
The agency has now also contacted all UK teenagers who attended the 12 day event as a precaution to stop the disease spreading.
Two teenagers from the Highland group were were confirmed has having the virus earlier this week. One teenage boy was so ill that he was kept in isolation at Raigmore Hospital.
He has since been discharged.
Dr Jim McMenamin, consultant epidemiologist and Chair of the Incident team said “A third meningitis case was has been identified in follow-up of a close contact from the North of Scotland unit who attended the 23 World Scouts Jamboree in Japan.
“The provision of information on signs and symptoms to look-out for, allows the early identification of anyone incubating the infection to receive prompt antibiotic treatment.
“Laboratory and other information indicate that the risk of infection appears confined to the small group of scouts in the North of Scotland who attended the Jamboree and those in households of the three confirmed cases.
“However as a precautionary measure all scouts who went to the Jamboree in Japan from the UK have been contacted by letter to alert them about these cases and to be aware of symptoms.
“We have also contacted colleagues in Japan and cascaded this information to other countries through the World Health Oganisation and the European Centre for Disease Prevention and Control.”
“Should anyone who attended the Jamboree become ill they are advised to contact their doctor or NHS24 urgently and ask for advice.”