Recent Research Uncovers Persistent Vaccination Gaps

New Zealand's response to the COVID-19 pandemic showcased one of the world's most successful elimination strategies, yet stark disparities in vaccination uptake emerged between Māori and Pacific populations and other groups. A groundbreaking study published in February 2026 by researchers from Victoria University of Wellington, University of Auckland, and Massey University analyzed whole-of-population data up to May 2023, revealing that 28.4% of Māori remained unvaccinated compared to 14.7% of non-Māori. This translated to approximately 78,880 fewer Māori individuals fully vaccinated than expected if parity had been achieved. The research, utilizing Stats NZ's Integrated Data Infrastructure, underscores longstanding health inequities amplified by the pandemic.

While overall national vaccination rates soared—with over 94% of eligible populations aged 12+ receiving at least one dose—the gaps for priority populations persisted even into booster campaigns. This Victoria University-led effort highlights how socio-demographic factors intertwined with access barriers to hinder equitable protection.

Breaking Down the Numbers: Primary Series and Booster Disparities

The 2026 study provides granular insights: among Māori, fully vaccinated rates stood at around 66.6 per 1,000 population, versus 82.6 per 1,000 for non-Māori. Unvaccinated rates were double for Māori at 284 per 1,000 compared to 148 per 1,000. Partial vaccination—receiving only the first dose—was also higher among Māori in certain age bands, particularly older adults.

A complementary geospatial analysis of 2022 adult immunisation coverage found third-dose (booster) uptake lagging for Māori and Pacific peoples, with zero-dose rates peaking at 10.8% among Māori. By late 2022, Māori over-65s reached 75-80% booster coverage, trailing Europeans by about 10%. Pacific adults showed similar patterns, with 80.2% third-dose uptake in seniors but higher zero-dose proportions overall.

Te Whatu Ora data as of February 2026 indicates ongoing booster administration, but ethnic breakdowns confirm persistent gaps, with Pacific peoples at lower second-booster rates relative to population size.Explore latest vaccine dashboard.

Socio-Economic Drivers: Housing, Income, and Family Structures

Logistic regression in the Victoria study identified key predictors of unvaccination among Māori: disability (adjusted odds ratio [aOR] 1.52), household crowding (aOR 1.20), poor housing quality (aOR 1.10), multigenerational households (aOR 1.17), and presence of children under five (aOR 1.51). Lower household incomes correlated with higher unvaccinated odds, while incomes over NZ$100,000 offered protection (aOR 0.33).

These factors reflect broader inequities: Māori and Pacific families often live in denser urban or rural settings with limited transport, exacerbating access issues. Primary Health Organisation (PHO) enrolment slashed unvaccinated odds dramatically (aOR 0.10), emphasizing its role in bridging gaps.

For Pacific communities, concentrated in Auckland's high-deprivation areas, similar household dynamics—extended whānau (family) living—amplified vulnerabilities during lockdowns.

Access Barriers and Rural-Urban Divides

Rural Māori faced compounded challenges: longer travel to vaccination sites, fewer pop-up clinics, and workforce demands in essential sectors. The geospatial study noted higher zero-dose clusters in rural locales, aligning with lower PHO penetration. Urban Pacific enclaves, while proximate to sites, grappled with language barriers and work schedules.

Historical underfunding of Māori health providers delayed tailored outreach, as noted in the Royal Commission into COVID-19 Lessons Learned, which critiqued initial equity strategies despite in-principle commitments.

Cultural Trust and Historical Mistrust

Deep-seated mistrust, rooted in events like the 1980s cervical screening inquiries and land confiscations, fueled hesitancy. Studies on vaccine perceptions found Māori and Pacific prioritizing whānau consultations over mandates, viewing rushed rollouts skeptically.

Community-led models, like iwi-run vaccination hubs, boosted uptake by embedding cultural safety—using te reo Māori, karakia (prayers), and kai (food)—yet scaled insufficiently early on.

Health Impacts: Elevated Risks and Outcomes

Disparities translated to consequences: Māori and Pacific had higher age-adjusted hospitalization (2-3x) and mortality rates. Pre-existing conditions like diabetes, prevalent due to inequities, amplified severity. The 2026 study links lower vaccination to these excesses, estimating preventable cases.

Royal Commission reports confirm disproportionate burdens, urging systemic reforms.Read Royal Commission findings.

Government Strategies and Community Innovations

Te Tiriti o Waitangi-guided plans prioritized Māori/Pacific, deploying mobile units and marae (meeting grounds) clinics. Pae Tū Aha Health led Pacific efforts, achieving localized surges. Yet, transition to mitigation in 2022 exposed gaps in sustained engagement.

Boosters targeted seniors via GPs, improving Māori/Pacific rates but not closing gaps fully.

Lessons from Official Inquiries

The Royal Commission highlighted vaccination shortfalls despite equity rhetoric, recommending iwi-Māori funding and Pacific-specific models. It stressed data sovereignty and co-design for future pandemics.

Charting Equity: Boosters and Beyond

2026 data shows booster disparities narrowing slightly via targeted campaigns, but vigilance needed for variants. JN.1 monovalent boosters from 2025 emphasize ongoing needs.

Role of Higher Education in Health Equity Research

Universities like Victoria Wellington drive evidence: this study informs policy. Aspiring researchers can pursue public health roles; explore higher ed jobs in epidemiology or equity studies. Career advice for health academics highlights pathways.

Photo by MC Kontext on Unsplash

Future Outlook: Actionable Pathways to Parity

Enhance PHO enrollment, fund community providers, integrate cultural models routinely. Digital tools for whānau booking and education promise gains. For lasting equity, address upstream determinants—housing, income—via intersectoral action.

Prospective studies from NZ universities will track long-term impacts, informing global Indigenous health strategies. Interested in contributing? Check university jobs, rate your professors, or higher ed career advice.