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Between May 28 and June 3, 8,117 people tested positive for COVID-19 and around two thirds provided details of people they had come into close contact with to the government scheme, the Department of Health has said.
Some 31,794 contacts were identified by the system and 26,985 (85%) were able to be contacted and told to stay indoors.
A number of contacts were not able to be identified as the contact details for some of those who tested positive for coronavirus were unavailable or incorrect, or they did not respond.
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