Optimal H1N1 vaccination strategies based on self-interest versus group interest

dc.creatorShim, Eunhaen
dc.creatorAncel Meyers. Laurenen
dc.creatorGalvani, Alison P.en
dc.date.accessioned2014-12-15T17:09:55Zen
dc.date.available2014-12-15T17:09:55Zen
dc.date.issued2011-02-25en
dc.descriptionEunha Shim is with the Deparment of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261, USA -- Eunha Shim and Alison P. Galvani are with the Deparment of Epidemiology and Public Health, Yale University, New Haven, CT 06510, USA -- Lauren Ancel Meyers is with the Section of Integrative Biology, University Texas at Austin, 1 University Station C0930, Austin, Texas, 78712, USA and the Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM, 87501, USAen
dc.description.abstractBackground: Influenza vaccination is vital for reducing H1N1 infection-mediated morbidity and mortality. To reduce transmission and achieve herd immunity during the initial 2009-2010 pandemic season, the US Centers for Disease Control and Prevention (CDC) recommended that initial priority for H1N1 vaccines be given to individuals under age 25, as these individuals are more likely to spread influenza than older adults. However, due to significant delay in vaccine delivery for the H1N1 influenza pandemic, a large fraction of population was exposed to the H1N1 virus and thereby obtained immunity prior to the wide availability of vaccines. This exposure affects the spread of the disease and needs to be considered when prioritizing vaccine distribution. Methods: To determine optimal H1N1 vaccine distributions based on individual self-interest versus population interest, we constructed a game theoretical age-structured model of influenza transmission and considered the impact of delayed vaccination. Results: Our results indicate that if individuals decide to vaccinate according to self-interest, the resulting optimal vaccination strategy would prioritize adults of age 25 to 49 followed by either preschool-age children before the pandemic peak or older adults (age 50-64) at the pandemic peak. In contrast, the vaccine allocation strategy that is optimal for the population as a whole would prioritize individuals of ages 5 to 64 to curb a growing pandemic regardless of the timing of the vaccination program. Conclusions: Our results indicate that for a delayed vaccine distribution, the priorities that are optimal at a population level do not align with those that are optimal according to individual self-interest. Moreover, the discordance between the optimal vaccine distributions based on individual self-interest and those based on population interest is even more pronounced when vaccine availability is delayed. To determine optimal vaccine allocation for pandemic influenza, public health agencies need to consider both the changes in infection risks among age groups and expected patterns of adherence.en
dc.description.catalogingnoteeshim@pitt.eduen
dc.description.departmentIntegrative Biologyen
dc.description.sponsorshipen
dc.identifier.Filename1471-2458-11-S1-S4en
dc.identifier.citationShim, Eunha, Lauren A. Meyers, and Alison P. Galvani. “Optimal H1N1 Vaccination Strategies Based on Self-Interest versus Group Interest.” BMC Public Health 11, no. Suppl 1 (February 25, 2011): S4. doi:10.1186/1471-2458-11-S1-S4.en
dc.identifier.doidoi:10.1186/1471-2458-11-S1-S4en
dc.identifier.urihttp://hdl.handle.net/2152/27807en
dc.language.isoEnglishen
dc.publisherBMC Public Healthen
dc.rightsAdministrative deposit of works to UT Digital Repository: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access at http://www.biomedcentral.com. The public license is specified as CC-BY: http://creativecommons.org/licenses/by/4.0/. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en
dc.subjectH1N1en
dc.subjectmorbidityen
dc.subjectmortalityen
dc.subjectInfluenza vaccinationen
dc.subjecten
dc.titleOptimal H1N1 vaccination strategies based on self-interest versus group interesten
dc.typeArticleen

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