There have been no reported cases of measles in Rotorua following the recent national outbreak.
But Toi Te Ora Bay of Plenty and Lakes medical officer of health Neil de Wet is urging parents to ensure their children are immunised.
There were two reported cases of measles in the Bay of Plenty in January, after no cases were reported since 2014.
de Wet said the cases were treated seriously and infected people were isolated to stop any chance of spreading.
De Wet said 89 per cent of children within the district were vaccinated. While the aim was to get 95 per cent vaccinated, it was significantly better than 10 years ago when this ranged in the 60 percentile.