New Zealand’s government has acknowledged what most other countries did long ago: it can no longer completely get rid of coronavirus.

Prime Minister Jacinda Ardern announced a cautious plan to ease lockdown restrictions in Auckland, despite an outbreak there that continues to simmer.

Since early in the pandemic, New Zealand had pursued an unusual zero-tolerance approach to the virus through strict lockdowns and aggressive contact tracing.

Until recently, that elimination strategy had worked remarkably well for the country of five million, which has reported just 27 virus deaths.

While other nations faced rising death tolls and disrupted lives, New Zealanders went back to workplaces, schools and sports stadiums safe from any community spread.

But that all changed when the more contagious Delta variant somehow escaped from a quarantine facility in August after it was brought into the country by a traveller returning from Australia.

New Zealand went into the strictest form of lockdown after just a single local case was detected, but it was not enough to halt the outbreak.

One factor may have been that the disease spread among some groups that are typically more wary of authorities, including gang members and homeless people living in transitional housing.

The outbreak has grown to more than 1,300 cases, with 29 more detected on Monday. A few cases have been found outside Auckland.

Ms Ardern said seven weeks of lockdown restrictions in Auckland had helped keep the outbreak under control.

“For this outbreak, it’s clear that long periods of heavy restrictions has not got us to zero cases,” she said.

“But that is OK. Elimination was important because we didn’t have vaccines. Now we do, so we can begin to change the way we do things.”

New Zealand began its vaccination campaign slowly compared with most other developed nations. Rates rocketed in August after the outbreak began but have dropped off significantly since then.

About 65% of New Zealanders have had at least one dose and 40% are fully vaccinated. Among people aged 12 and older, about 79% have had at least a single jab.

Under Ms Ardern’s plan that starts on Tuesday, Aucklanders will be able to meet outdoors with loved ones from one other household, early childhood centres will reopen and people will be able to go to the beach.

The dates for a phased reopening of retail stores and then bars and restaurants have yet to be decided.

Ms Ardern said the elimination strategy had served the country well but the government always intended to eventually move to the protection of vaccines, a change hastened by the Delta variant “game changer”.

The government’s elimination approach had been broadly supported by New Zealanders but was facing increasing criticism. Over the weekend, hundreds of people turned out at rallies protesting against the lockdown.

Opposition legislator Chris Bishop said the government had no clear strategy to deal with the outbreak other than total surrender.

But Ms Ardern said most measures would remain in place to keep the outbreak under control, including exhaustive contact tracing and isolating those who got infected.

“There’s good cause for us to feel optimistic about the future,” she said. “But we cannot rush.”