Bay health official have registered three cases of the Zika virus in the past 12 months.
Toi Te Ora Public Health Service confirmed that following a reported case in March last year, two further cases were notified to the service this year.
One patient lived in the Western Bay region and the other from the Eastern Bay of Plenty.
Last year's case related to a man who had traveled to Vanuatu.
The latest cases involved two women, one who visited Tonga in February and the other who traveled to Fiji this month.
The Zika virus is spread mostly by the bite of an infected Aedes species mosquito not normally found in New Zealand - currently there is no vaccine to prevent or treat Zika.