There are 11 new Covid-19 cases in managed isolation related to new arrivals and no new cases in the community.

Of the new cases announced today, 10 arrived from India on a flight via the United Arab Emirates on Saturday.

They all tested positive on arrival during routine testing. The other new case arrived on March 26 from Italy, via Singapore, and returned a positive routine test on day 1.

All 11 new cases are in managed isolation and quarantine in Auckland.

The Ministry is carrying out additional testing including whole genome sequencing to discover whether any of the cases were related.

"Interviews, and where indicated, further testing will help to determine whether any of these cases are historical. Data tells us that since the beginning of the year at least one in eight Covid-19 cases is historical."

The Ministry said in a statement the latest cases showed the value of having day 0/1 testing in place.

"All people arriving into New Zealand must remain in their rooms until those day 0/1 tests results come back.
"It's also not uncommon to see some of the day 0/1 cases be reclassified as historical cases, which are not infectious. This is why we are continuing to publish the cumulative number of historical cases."

The seven-day rolling average of new cases detected at the border is 4.

The total number of active cases in New Zealand today is 86, meanwhile the total number of confirmed cases is 2137.