NHS Lanarkshire confirmed the total number of confirmed cases is now 14 at the virus-hit Sitel site in Eurocentral in Lanarkshire.
There are a further five linked cases.
The staff who tested positive at the call centre were working for NHS England’s Test and Trace programme.
Dr David Cromie, consultant in public health medicine, NHS Lanarkshire, said:
“Our public health team, alongside North Lanarkshire Council, continues to work closely with the employer Sitel and staff in the building who have been encouraged to have tests carried out.
“NHS Lanarkshire’s incident management team has been meeting regularly to investigate.
Dr Cromie added: “A total of 14 positive cases associated with Sitel’s premises have been identified to date, with an additional five cases arising from linked contacts.
“We are taking all of the necessary steps to identify those who may have been in contact with a confirmed case of Covid-19 and to mitigate the risk of onward transmission to others.
“We would like to reassure the local community that appropriate measures are being implemented.”
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