The National Public health Emergency team says there's been a clear increase in people going to workplaces.
The number of close contacts was over 2 per adult from January but rose to a peak of 2.7 in early March.
It comes as 582 new cases of covid 19 have been confirmed, while there were no additional deaths.
The number of Covid-19 patients in public hospitals dropped to 334 last night, while there are 83 in intensive care.
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