First Minister insisted the system works well despite new figures showing 400 people who tested positive for Covid last week could not be reached.
That meant Public Health Scotland could not log details of where they had been and who they had met in recent days. It comes as the Scottish Government was yesterday forced to admit there was a "coding error" in how Test and Protect was logging response times.
In some cases the system had been performing up to five times worse than previously thought, with contact tracing taking longer than 72 hours to complete.Guidance set by the World Health Foundation says that effective contact tracing schemes should people who have tested positive as well as people they have been in close proximity to within.
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