{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,27]],"date-time":"2026-06-27T11:49:47Z","timestamp":1782560987563,"version":"3.54.5"},"reference-count":30,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T00:00:00Z","timestamp":1775865600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T00:00:00Z","timestamp":1775865600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001504","name":"Ministry of Health, New Zealand","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001504","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001511","name":"Auckland Medical Research Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001511","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001505","name":"Health Research Council of New Zealand","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001505","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Australas J Ageing"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>Older adults faced heightened vulnerability during the COVID\u201019 pandemic, leading to increased mortality. This study investigated the impact of COVID\u201019 vaccination on COVID\u201019\u2010related mortality among the main ethnic groups in long\u2010term care during the Delta\u2010Omicron wave in New Zealand.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We used national health datasets (interRAI Long Term Care Facility, COVID\u201019 immunisation, COVID\u201019 test results, mortality) from August 2021 to August 2022. Multi\u2010state modelling assessed transition hazards from infection to COVID death and other causes of death among M\u0101ori, Pacific, Asian and European residents. Transition hazard ratios compared the risk of transitioning from infection to COVID versus non\u2010COVID death.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 34,147 long\u2010term care residents (female: 64.0%, mean age: 84.8\u2009years SD\u2009=\u20098.5) were included. For M\u0101ori aged &lt;\u200985, Asians &lt;\u200963 and Europeans &lt;\u200993 who had 3+ doses of vaccine, the risk of COVID death was statistically lower than non\u2010COVID death. Unvaccinated residents showed higher hazards for transitioning to COVID death. For Pacific peoples, transition hazard ratios were not statistically significant, likely due to small sample size. However, successive vaccine doses suggested reduced COVID mortality.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>COVID\u201019 vaccination reduced the risk of COVID deaths across ethnicities in New Zealand's long\u2010term care. However, the level of protection offered by the vaccine varied by ethnicity and age.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/ajag.70155","type":"journal-article","created":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T09:39:06Z","timestamp":1775900346000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Efficacy of\n                    <scp>COVID<\/scp>\n                    \u201019 Vaccination in Mortality Among Multi\u2010Ethnic Long\u2010Term Care Residents in New Zealand"],"prefix":"10.1111","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0239-9356","authenticated-orcid":false,"given":"Gary","family":"Cheung","sequence":"first","affiliation":[{"name":"Department of Psychological Medicine, Faculty of Medical and Health Science, School of Medicine The University of Auckland  Auckland New 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