The combination of the Covid-19 ‘traffic light’ system and the removal of internal borders could cause a massive spike in infections, RNZ reports. “There’s far more mixing of people now, far more interactions, and it wouldn’t at all surprise me if our case numbers start to rise again,” says microbiologist Siouxsie Wiles. “I’m imploring Aucklanders to ‘staycation’ rather than to head to other areas, especially those areas where the communities have asked us to stay away, because they are busy getting the vaccination numbers up.”