Covid caller and epidemiologist Professor Michael Baker says a spike in cases of Covid-19 is a warning not to underestimate the severity of the disease.
Last week, Te Whatu Ora - Health New Zealand reported just over 5800 confirmed and probable reported cases, with a possibly greater number going unreported.
More than a third of cases were in Auckland and nearly 750 were in Canterbury.
Baker says research has indicated Māori and Pasifika people and people with long-term conditions are most at-risk regarding the virus and should be most cautious.