There is limited evidence to suggest the virus can be sexually transmitted however the local public health service is continuing to investigate how the woman became infected.
There is also the possibility she was bitten by an infected mosquito brought into the country in her partner’s luggage.
The risk to the wider public is “extremely low”, Mackie said.
The species of mosquito that can spread Zika was not native to New Zealand.
People travelling to Zika-affected countries are advised to protect themselves against mosquito bites. Anyone who is pregnant or plans to become pregnant should consider delaying travel to an affected area.