Observations on Mortality during the 1918 Influenza Pandemic
Identifieur interne : 000146 ( 1957/Analysis ); précédent : 000145; suivant : 000147Observations on Mortality during the 1918 Influenza Pandemic
Auteurs : Jeffrey Luk ; Peter Gross [États-Unis] ; William W. ThompsonSource :
- Clinical Infectious Diseases [ 1058-4838 ] ; 2001.
Abstract
The original purpose of our study was to examine the unusual W-shaped mortality curve associated with the 1918 influenza pandemic and possibly explain the peak in mortality among individuals aged 20–40 years. We plotted age-specific excess mortality instead of total mortality for the 1918 pandemic using a 5-year baseline. For comparison, we also graphed excess mortality curves for the 1957 and 1968 pandemics using 5-year baselines. The 1957 and 1968 curves exhibited the usual U-shaped curve, with high excess mortality among infants and the elderly population relative to young adults. The 1918 curve, however, presented unexpected results. A peak in excess mortality among infants and young adults was seen, but the expected W shape did not result. We instead found negative excess mortality among elderly individuals, suggesting that this group was exposed, at an earlier date, to an influenza strain similar to the so-called Spanish influenza (H1N1) strain.
Url:
DOI: 10.1086/322662
Affiliations:
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Gross, Dept. of Internal Medicine, Hackensack University Medical Center, 30 Prospect Ave., Hackensack</wicri:cityArea></affiliation></author><author><name sortKey="Thompson, William W" sort="Thompson, William W" uniqKey="Thompson W" first="William W." last="Thompson">William W. Thompson</name><affiliation><wicri:noCountry code="subField">Atlanta</wicri:noCountry></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Clinical Infectious Diseases</title><title level="j" type="abbrev">Clinical Infectious Diseases</title><idno type="ISSN">1058-4838</idno><idno type="eISSN">1537-6591</idno><imprint><publisher>The University of Chicago Press</publisher><date when="2001-10-15">2001</date><biblScope unit="vol">33</biblScope><biblScope unit="issue">8</biblScope><biblScope unit="page" from="1375">1375</biblScope><biblScope unit="page" to="1378">1378</biblScope></imprint><idno type="ISSN">1058-4838</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1058-4838</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract">The original purpose of our study was to examine the unusual W-shaped mortality curve associated with the 1918 influenza pandemic and possibly explain the peak in mortality among individuals aged 20–40 years. We plotted age-specific excess mortality instead of total mortality for the 1918 pandemic using a 5-year baseline. For comparison, we also graphed excess mortality curves for the 1957 and 1968 pandemics using 5-year baselines. The 1957 and 1968 curves exhibited the usual U-shaped curve, with high excess mortality among infants and the elderly population relative to young adults. The 1918 curve, however, presented unexpected results. A peak in excess mortality among infants and young adults was seen, but the expected W shape did not result. We instead found negative excess mortality among elderly individuals, suggesting that this group was exposed, at an earlier date, to an influenza strain similar to the so-called Spanish influenza (H1N1) strain.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>New Jersey</li></region></list><tree><noCountry><name sortKey="Luk, Jeffrey" sort="Luk, Jeffrey" uniqKey="Luk J" first="Jeffrey" last="Luk">Jeffrey Luk</name><name sortKey="Thompson, William W" sort="Thompson, William W" uniqKey="Thompson W" first="William W." last="Thompson">William W. Thompson</name></noCountry><country name="États-Unis"><region name="New Jersey"><name sortKey="Gross, Peter" sort="Gross, Peter" uniqKey="Gross P" first="Peter" last="Gross">Peter Gross</name></region><name sortKey="Gross, Peter" sort="Gross, Peter" uniqKey="Gross P" first="Peter" last="Gross">Peter Gross</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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