The number of cases in a coronavirus cluster linked to pupils of a high school in Glasgow has risen to 11.
A further three positive cases had been identified in north east Glasgow by the NHS Greater Glasgow and Clyde (NHSGGC) test and protect service.
The health board said on Wednesday a number of pupils at Bannerman High School in Baillieston were among the eight cases already identified.
On Thursday they added there was “no indication any transmission has occurred in the school” and none of those affected returned to classes as the school reopened.
The health board also said the cases were not “causing any clinical concern”.
Dr Linda de Caestecker, NHSGGC director of public health, said: “We would like to reiterate to local people and businesses that this cluster of cases of Covid-19 is being thoroughly investigated and managed by the NHSGGC Public Health Protection Team.
“To maintain patient confidentiality we are unable to give any further information on the cases.
“Each of these cases is being managed and followed up in detail, and all of them are isolating at home.
“All settings that these cases attended during their infectious period are being identified through the test and protect service and are assessed and supported with control measures.
“Anyone who may have been exposed to these cases is being given appropriate advice but want to remind people to stay off school or work and get tested if they experience any symptoms.”
Meanwhile in a separate case another pupil of a high school in Coatbridge, North Lanarkshire, has also tested positive for the virus.
The youngster, who did not return to St Ambrose High School on Wednesday, is self-isolating at home with their immediate family.
NHS Lanarkshire said they had tested positive on Thursday morning having displayed “mild symptoms” since Tuesday.
Gabe Docherty, the health board’s director of public health, said: “A positive Covid-19 confirmed case has been identified in a pupil at St Ambrose High School in Coatbridge.
“The pupil tested positive this morning (August 13), after displaying mild symptoms since August 11, but they have not attended school at all.
“Our Test and Protect service is contacting anyone who may have been in close contact with the case.
“NHS Lanarkshire is working closely with North Lanarkshire Council and the school to identify all close contacts of the case who are being given public health advice and being told to self-isolate.”
Derek Brown, North Lanarkshire Council executive director, said: “The council is fully supporting the incident management team, led by NHS Lanarkshire, and its test and protect activity.
“We will continue to respond to advice from NHS Lanarkshire and provide information to parents and carers, pupils and staff.”