New Zealand is among the few remaining countries to have avoided any outbreaks of the omicron variant — but Prime Minister Jacinda Ardern said Thursday an outbreak was inevitable and the nation would tighten restrictions as soon as one was detected. But she also said that New Zealand would not impose the lockdowns that it has used previously, including for the delta variant.

“This stage of the pandemic is different to what we have dealt with before. Omicron is more transmissible,” Ardern said. “That is going to make it harder to keep it out, but it will also make it more challenging to control once it arrives. But just like before, when Covid changes, we change.”