Nelson Airport, two supermarkets and a car parts store in Motueka are among the locations of interest linked to 10 members in a household confirmed to have the Omicron variant.
Today the Nelson/Tasman region is in the Covid-19 red setting for the first time, having first moved to orange when the traffic light framework began in December.
Nelson Mayor Rachel Reese and Tasman District Mayor Tim King spoke to Susie Ferguson.