{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T05:44:44Z","timestamp":1763963084407,"version":"3.45.0"},"reference-count":43,"publisher":"BMJ","issue":"11","license":[{"start":{"date-parts":[[2025,11,23]],"date-time":"2025-11-23T00:00:00Z","timestamp":1763856000000},"content-version":"unspecified","delay-in-days":22,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Glob Health"],"accepted":{"date-parts":[[2025,10,29]]},"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Early constraints on vaccine supply during the COVID-19 pandemic prompted many public health leaders to recommend taking the first vaccine available, though many individuals chose to wait for a \u2018more effective\u2019 vaccine. This indicates a potential tension between the vaccination strategy that individuals find in their own best interest and the one that maximises population well-being.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We integrate a mathematical epidemiological model and an economic decision-making model to determine the conditions under which rational and self-interested individuals opt to wait for a more effective vaccine instead of taking the one readily available and whether their choices align with what is optimal from a population-level perspective. We consider different assumptions about the characteristics of the available vaccines and the severity of the pandemic, and we investigate the population health consequences if individuals stray from the vaccination strategy that best promotes population well-being.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Taking the first vaccine available is not always optimal from a population-level perspective, but uncertainty about the characteristics of a subsequent vaccine increases the likelihood that this is indeed in the best interest of the population as a whole. However, protection offered by the vaccination of others may induce a greater proportion of rational and self-interested individuals to wait for the more effective vaccine than what would be optimal from a population-level perspective. If individuals decide to follow their own best interests, more people will end up waiting for the more effective vaccine, resulting in more infections and deaths during the waiting period.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Our results will help policymakers facing future pandemics to craft recommendations that reduce disease transmission and save lives when early vaccines may be less effective than future vaccines.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjgh-2025-020105","type":"journal-article","created":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T05:40:20Z","timestamp":1763962820000},"page":"e020105","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Vaccine selection strategies and their implications for individual versus population well-being"],"prefix":"10.1136","volume":"10","author":[{"given":"Neil G","family":"Bennett","sequence":"first","affiliation":[{"name":"CUNY Institute for Demographic Research, City University of New York, New York, New York, USA"},{"name":"Austin W Marxe School of Public and International Affairs, Baruch College, City University of New York, New York, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3892-8301","authenticated-orcid":false,"given":"Maddalena","family":"Ferranna","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical and Health Economics, University of Southern California, Los Angeles, California, USA"},{"name":"Leonard D. Schaeffer Center for Health Policy and Economics, University of Southern California, Los Angeles, California, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaofan","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical and Health Economics, University of Southern California, Los Angeles, California, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David E","family":"Bloom","sequence":"additional","affiliation":[{"name":"Department of Global Health and Population, Harvard TH Chan School of Public Health, Boston, Massachusetts, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2025,11,23]]},"reference":[{"key":"2025112321400937000_10.11.e020105.1","unstructured":"Duster C . Fauci: \u201cI would take whatever vaccine would be available to me. CNN; 2021. 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