Spatial considerations for the allocation of pre-pandemic influenza vaccination in the United States
Identifieur interne : 003892 ( Main/Exploration ); précédent : 003891; suivant : 003893Spatial considerations for the allocation of pre-pandemic influenza vaccination in the United States
Auteurs : Joseph T. Wu [Hong Kong] ; Steven Riley [République populaire de Chine] ; Gabriel M. Leung [République populaire de Chine]Source :
- Proceedings of The Royal Society B [ 0962-8452 ] ; 2007.
Abstract
The impact of the next influenza pandemic may be mitigated by inducing immunity in individuals prior to the start of national epidemics using a pre-pandemic vaccine targeted against current avian influenza strains. The US Department of Health and Human Services (HHS) intends that pre-pandemic vaccines will be allocated to states in proportion to the size of their population in predefined priority groups, i.e. approximately pro-rata. We show that such an equitable policy is likely to be the least efficient in terms of the number of infections averted. We demonstrate that the potential benefits could be substantial if a fully discretionary policy is allowed, i.e. if some regions are allocated sufficient vaccines to achieve herd immunity while other regions are allocated no vaccine. Since such an inequitable policy may be impractical, we consider the sensitivity of an intermediate policy (in which 50% of the stockpile is allocated on a pro-rata basis) to key transmission uncertainties. The benefits of the 50% discretionary policy are sensitive to parameter values which cannot be known in advance. Therefore, despite substantial potential benefits of non-pro-rata policies, our results suggest that the current HHS policy of pro-rata allocation by state is a good compromise in terms of simplicity, robustness, equity and efficiency.
Url:
DOI: 10.1098/rspb.2007.0893
Affiliations:
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Leung</name><affiliation wicri:level="1"><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Community Medicine and School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong Hong Kong SAR</wicri:regionArea><wicri:noRegion>The University of Hong Kong Hong Kong SAR</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Proceedings of The Royal Society B</title><idno type="ISSN">0962-8452</idno><idno type="eISSN">1471-2954</idno><imprint><publisher>The Royal Society</publisher><pubPlace>London</pubPlace><date type="e-published">2007</date><date type="published">2007</date><biblScope unit="vol">274</biblScope><biblScope unit="issue">1627</biblScope><biblScope unit="page" from="2811">2811</biblScope><biblScope unit="page" to="2817">2817</biblScope></imprint><idno type="ISSN">0962-8452</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0962-8452</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The impact of the next influenza pandemic may be mitigated by inducing immunity in individuals prior to the start of national epidemics using a pre-pandemic vaccine targeted against current avian influenza strains. The US Department of Health and Human Services (HHS) intends that pre-pandemic vaccines will be allocated to states in proportion to the size of their population in predefined priority groups, i.e. approximately pro-rata. We show that such an equitable policy is likely to be the least efficient in terms of the number of infections averted. We demonstrate that the potential benefits could be substantial if a fully discretionary policy is allowed, i.e. if some regions are allocated sufficient vaccines to achieve herd immunity while other regions are allocated no vaccine. Since such an inequitable policy may be impractical, we consider the sensitivity of an intermediate policy (in which 50% of the stockpile is allocated on a pro-rata basis) to key transmission uncertainties. The benefits of the 50% discretionary policy are sensitive to parameter values which cannot be known in advance. Therefore, despite substantial potential benefits of non-pro-rata policies, our results suggest that the current HHS policy of pro-rata allocation by state is a good compromise in terms of simplicity, robustness, equity and efficiency.</div></front></TEI><affiliations><list><country><li>Hong Kong</li><li>République populaire de Chine</li></country></list><tree><country name="Hong Kong"><noRegion><name sortKey="Wu, Joseph T" sort="Wu, Joseph T" uniqKey="Wu J" first="Joseph T" last="Wu">Joseph T. Wu</name></noRegion></country><country name="République populaire de Chine"><noRegion><name sortKey="Riley, Steven" sort="Riley, Steven" uniqKey="Riley S" first="Steven" last="Riley">Steven Riley</name></noRegion><name sortKey="Leung, Gabriel M" sort="Leung, Gabriel M" uniqKey="Leung G" first="Gabriel M" last="Leung">Gabriel M. Leung</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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