"We are closely coordinating with the local health authorities who feel the risk to others is low, and the individual remains in self-isolation," it added.
"As a precaution, we have asked some of our team members to stay at home while we work with the Health and Safety Executive to assess the situation." Apple said a deep cleaning programme at all of its offices and stores would continue and it "will take all necessary precautions in accordance with guidance from health authorities".