New Zealand officials are investigating the possibility that its first Covid-19 cases in more than three months were imported by freight, as the country's biggest city plunged back into lockdown.
The discovery of four infected family members in Auckland led Prime Minister Jacinda Ardern to swiftly reimpose tight restrictions in the city and social distancing measures across the entire country.
The source of the outbreak has baffled health officials, who said they were confident there was no local transmission of the virus in New Zealand for 102 days. "We are working hard to put together pieces of the puzzle on how this family got infected," said Director General of Health, Ashley Bloomfield.