Officials are scrambling to identify the source of infection for a man who tested positive days after completing managed isolation, as the Government prepares to announce whether the country can drop to alert level 1.

The mystery case recorded two negative results while quarantined in Christchurch but has now passed the virus on to two people in his household, including a student at a Mt Roskill school.

The four new cases confirmed yesterday – two in the community – come as Prime…

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