A campaign to plug the gap in measles immunity has reached only a small number of Cantabrians.
The Government has launched a catch-up campaign for people aged 15 to 30 who were not fully immunised as children.
More than 2000 Kiwis caught measles in the 2019 outbreak - and likely exported it to Samoa, where 83 people died.
Nearly 36,000 Cantabrians need a booster shot but just 5 per cent have been vaccinated, halfway through the year-long campaign.