Just one of the 112 people who have been in hospital in the latest outbreak was fully vaccinated, while 90 had no vaccination.
The Ministry of Health data, current to Monday this week, showed 112 people had been hospitalised in this outbreak, which is about 10 percent of the 1177 community cases since 17 August.
Of the cases, 37 were in fully vaccinated people with only one going to hospital.
Some 974 people without vaccinations, including children under 12 years, have been infected and 93 needed hospital-level care.
Just 3 percent of cases were fully vaccinated when they caught the virus, and less than 1 percent of those who went to hospital.
Fully vaccinated is defined as two weeks after a person's second dose.
Some 83 percent of cases and hospitalisations had not received any vaccine doses at the time of their infection.