Excess mortality from influenza in a large urban population, Rome, Italy, 1956–76
Identifieur interne : 000011 ( Istex/Corpus ); précédent : 000010; suivant : 000012Excess mortality from influenza in a large urban population, Rome, Italy, 1956–76
Auteurs : G. Ragona ; G. Giunchi ; G. Rocchi ; A. Muzzi ; A. De FeliciSource :
- Journal of Hygiene [ 0022-1724 ] ; 1978-04.
Abstract
Influenza activity was studied in the Rome population from 1956 to 1976 by analysis of mortality from respiratory causes and from all causes. During cold weather months, type A influenza virus was associated, as a rule, with epidemic excess deaths at two year intervals while type B virus was prevalent twice during epidemic excess mortality periods. Excess absenteeism from work and virus isolation data were also compared with epidemic excess mortality during four consecutive years. The evidence obtained indicated that influenza virus isolation alone does not represent a reliable index of epidemic influenza activity in this population. The proportion of deaths attributed to respiratory causes consistently increased in every epidemic, the most pronounced increases occurring during large epidemics. The break-down by age of deaths from respiratory causes in the course of two epidemic periods showed that the percentage distribution of deaths was essentially the same as in non-epidemic periods. This evidence indicates that the same factors influencing the age-related distribution of mortality from respiratory causes during non-epidemic periods, probably affect the fatal outcome of influenza during epidemics.
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DOI: 10.1017/S0022172400053602
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Rocchi</name><affiliation><mods:affiliation>Third Medical Clinic, University of Rome, 00161 Rome, Italy</mods:affiliation></affiliation></author><author><name sortKey="Muzzi, A" sort="Muzzi, A" uniqKey="Muzzi A" first="A." last="Muzzi">A. Muzzi</name><affiliation><mods:affiliation>Institute of Hygiene, University of Rome</mods:affiliation></affiliation></author><author><name sortKey="De Felici, A" sort="De Felici, A" uniqKey="De Felici A" first="A." last="De Felici">A. 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Ragona</name><affiliation><mods:affiliation>Third Medical Clinic, University of Rome, 00161 Rome, Italy</mods:affiliation></affiliation></author><author><name sortKey="Giunchi, G" sort="Giunchi, G" uniqKey="Giunchi G" first="G." last="Giunchi">G. Giunchi</name><affiliation><mods:affiliation>Third Medical Clinic, University of Rome, 00161 Rome, Italy</mods:affiliation></affiliation></author><author><name sortKey="Rocchi, G" sort="Rocchi, G" uniqKey="Rocchi G" first="G." last="Rocchi">G. Rocchi</name><affiliation><mods:affiliation>Third Medical Clinic, University of Rome, 00161 Rome, Italy</mods:affiliation></affiliation></author><author><name sortKey="Muzzi, A" sort="Muzzi, A" uniqKey="Muzzi A" first="A." last="Muzzi">A. Muzzi</name><affiliation><mods:affiliation>Institute of Hygiene, University of Rome</mods:affiliation></affiliation></author><author><name sortKey="De Felici, A" sort="De Felici, A" uniqKey="De Felici A" first="A." last="De Felici">A. De Felici</name><affiliation><mods:affiliation>Central Laboratory, ‘Lazzaro Spallanzani’ Hospital, Rome</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Hygiene</title><title level="j" type="abbrev">J. Hyg.</title><idno type="ISSN">0022-1724</idno><imprint><publisher>Cambridge University Press</publisher><pubPlace>Cambridge, UK</pubPlace><date type="published" when="1978-04">1978-04</date><biblScope unit="volume">80</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="249">249</biblScope><biblScope unit="page" to="257">257</biblScope></imprint><idno type="ISSN">0022-1724</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-1724</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Influenza activity was studied in the Rome population from 1956 to 1976 by analysis of mortality from respiratory causes and from all causes. During cold weather months, type A influenza virus was associated, as a rule, with epidemic excess deaths at two year intervals while type B virus was prevalent twice during epidemic excess mortality periods. Excess absenteeism from work and virus isolation data were also compared with epidemic excess mortality during four consecutive years. The evidence obtained indicated that influenza virus isolation alone does not represent a reliable index of epidemic influenza activity in this population. The proportion of deaths attributed to respiratory causes consistently increased in every epidemic, the most pronounced increases occurring during large epidemics. The break-down by age of deaths from respiratory causes in the course of two epidemic periods showed that the percentage distribution of deaths was essentially the same as in non-epidemic periods. This evidence indicates that the same factors influencing the age-related distribution of mortality from respiratory causes during non-epidemic periods, probably affect the fatal outcome of influenza during epidemics.</div></front></TEI><istex><corpusName>cambridge</corpusName><author><json:item><name>G. Ragona</name><affiliations><json:string>Third Medical Clinic, University of Rome, 00161 Rome, Italy</json:string></affiliations></json:item><json:item><name>G. Giunchi</name><affiliations><json:string>Third Medical Clinic, University of Rome, 00161 Rome, Italy</json:string></affiliations></json:item><json:item><name>G. Rocchi</name><affiliations><json:string>Third Medical Clinic, University of Rome, 00161 Rome, Italy</json:string></affiliations></json:item><json:item><name>A. Muzzi</name><affiliations><json:string>Institute of Hygiene, University of Rome</json:string></affiliations></json:item><json:item><name>A. 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The evidence obtained indicated that influenza virus isolation alone does not represent a reliable index of epidemic influenza activity in this population. The proportion of deaths attributed to respiratory causes consistently increased in every epidemic, the most pronounced increases occurring during large epidemics. The break-down by age of deaths from respiratory causes in the course of two epidemic periods showed that the percentage distribution of deaths was essentially the same as in non-epidemic periods. 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Hyg.</title><idno type="pISSN">0022-1724</idno><idno type="publisher-id">HYG</idno><imprint><publisher>Cambridge University Press</publisher><pubPlace>Cambridge, UK</pubPlace><date type="published" when="1978-04"></date><biblScope unit="volume">80</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="249">249</biblScope><biblScope unit="page" to="257">257</biblScope></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1978</date></creation><langUsage><language ident="en">en</language></langUsage><abstract style="normal"><p>Influenza activity was studied in the Rome population from 1956 to 1976 by analysis of mortality from respiratory causes and from all causes. During cold weather months, type A influenza virus was associated, as a rule, with epidemic excess deaths at two year intervals while type B virus was prevalent twice during epidemic excess mortality periods. Excess absenteeism from work and virus isolation data were also compared with epidemic excess mortality during four consecutive years. The evidence obtained indicated that influenza virus isolation alone does not represent a reliable index of epidemic influenza activity in this population. The proportion of deaths attributed to respiratory causes consistently increased in every epidemic, the most pronounced increases occurring during large epidemics. The break-down by age of deaths from respiratory causes in the course of two epidemic periods showed that the percentage distribution of deaths was essentially the same as in non-epidemic periods. This evidence indicates that the same factors influencing the age-related distribution of mortality from respiratory causes during non-epidemic periods, probably affect the fatal outcome of influenza during epidemics.</p></abstract></profileDesc><revisionDesc><change when="1978-04">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/ark:/67375/6GQ-MT09SQB7-3/fulltext.txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="corpus cambridge not found" wicri:toSee="no header"><istex:xmlDeclaration>version="1.0" encoding="US-ASCII"</istex:xmlDeclaration><istex:docType PUBLIC="-//NLM//DTD Journal Publishing DTD v2.2 20060430//EN" URI="journalpublishing.dtd" name="istex:docType"></istex:docType><istex:document><article dtd-version="2.2" article-type="research-article"><front><journal-meta><journal-id journal-id-type="publisher-id">HYG</journal-id><journal-title>Journal of Hygiene</journal-title><abbrev-journal-title>J. Hyg.</abbrev-journal-title><issn pub-type="ppub">0022-1724</issn><publisher><publisher-name>Cambridge University Press</publisher-name><publisher-loc>Cambridge, UK</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.1017/S0022172400053602</article-id><article-id pub-id-type="pii">S0022172400053602</article-id><article-id pub-id-type="publisher-id">05360</article-id><title-group><article-title>Excess mortality from influenza in a large urban population, Rome, Italy, 1956–76<xref ref-type="fn" rid="fn01">*</xref></article-title><alt-title alt-title-type="left-running">H. Ragona and others</alt-title><alt-title alt-title-type="right-running">Excess mortality from influenza in Rome</alt-title><fn-group><fn id="fn01" symbol="*"><label>*</label><p>This work was supported by contract No. 77.00276.84 within the ‘Progetto Finalizzato Virus’ of the C.N.R., Italy.</p></fn></fn-group></title-group><contrib-group><contrib><name><surname>Ragona</surname><given-names>G.</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib><name><surname>Giunchi</surname><given-names>G.</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib><name><surname>Rocchi</surname><given-names>G.</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib><name><surname>Muzzi</surname><given-names>A.</given-names></name><xref ref-type="aff" rid="aff2"></xref></contrib><contrib><name><surname>De Felici</surname><given-names>A.</given-names></name><xref ref-type="aff" rid="aff3"></xref></contrib></contrib-group><aff id="aff1"><addr-line>Third Medical Clinic</addr-line>, <institution>University of Rome</institution>, <addr-line>00161 Rome</addr-line>, <addr-line>Italy</addr-line></aff><aff id="aff2"><addr-line>Institute of Hygiene</addr-line>, <addr-line>University of Rome</addr-line></aff><aff id="aff3"><addr-line>Central Laboratory</addr-line>, <addr-line>‘Lazzaro Spallanzani’ Hospital</addr-line>, <addr-line>Rome</addr-line></aff><pub-date pub-type="ppub"><month>04</month><year>1978</year></pub-date><volume>80</volume><issue>2</issue><fpage seq="12">249</fpage><lpage>257</lpage><history><date date-type="received"><day>08</day><month>08</month><year>1977</year></date></history><permissions><copyright-statement>Copyright © Cambridge University Press 1978</copyright-statement><copyright-year>1978</copyright-year><copyright-holder>Cambridge University Press</copyright-holder></permissions><abstract abstract-type="normal"><title>SUMMARY</title><p>Influenza activity was studied in the Rome population from 1956 to 1976 by analysis of mortality from respiratory causes and from all causes. During cold weather months, type A influenza virus was associated, as a rule, with epidemic excess deaths at two year intervals while type B virus was prevalent twice during epidemic excess mortality periods. Excess absenteeism from work and virus isolation data were also compared with epidemic excess mortality during four consecutive years. The evidence obtained indicated that influenza virus isolation alone does not represent a reliable index of epidemic influenza activity in this population. The proportion of deaths attributed to respiratory causes consistently increased in every epidemic, the most pronounced increases occurring during large epidemics. The break-down by age of deaths from respiratory causes in the course of two epidemic periods showed that the percentage distribution of deaths was essentially the same as in non-epidemic periods. This evidence indicates that the same factors influencing the age-related distribution of mortality from respiratory causes during non-epidemic periods, probably affect the fatal outcome of influenza during epidemics.</p></abstract><counts><page-count count="9"></page-count></counts><custom-meta-wrap><custom-meta><meta-name>pdf</meta-name><meta-value>S0022172400053602a.pdf</meta-value></custom-meta></custom-meta-wrap></article-meta></front><back><ref-list><title>REFERENCES</title><ref><citation id="ref001" citation-type="journal"><name><surname>Burk</surname><given-names>R. F.</given-names></name>, <name><surname>Schaffner</surname><given-names>W.</given-names></name> & <name><surname>Koenig</surname><given-names>M. 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Geneva, 1957; 1965 revision. <publisher-loc>Geneva</publisher-loc>.</citation></ref></ref-list></back></article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Excess mortality from influenza in a large urban population, Rome, Italy, 1956–76</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Excess mortality from influenza in a large urban population, Rome, Italy, 1956–76*</title></titleInfo><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Ragona</namePart><affiliation>Third Medical Clinic, University of Rome, 00161 Rome, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Giunchi</namePart><affiliation>Third Medical Clinic, University of Rome, 00161 Rome, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Rocchi</namePart><affiliation>Third Medical Clinic, University of Rome, 00161 Rome, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Muzzi</namePart><affiliation>Institute of Hygiene, University of Rome</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">De Felici</namePart><affiliation>Central Laboratory, ‘Lazzaro Spallanzani’ Hospital, Rome</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="research-article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>Cambridge University Press</publisher><place><placeTerm type="text">Cambridge, UK</placeTerm></place><dateIssued encoding="w3cdtf">1978-04</dateIssued><copyrightDate encoding="w3cdtf">1978</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><abstract type="normal">Influenza activity was studied in the Rome population from 1956 to 1976 by analysis of mortality from respiratory causes and from all causes. During cold weather months, type A influenza virus was associated, as a rule, with epidemic excess deaths at two year intervals while type B virus was prevalent twice during epidemic excess mortality periods. Excess absenteeism from work and virus isolation data were also compared with epidemic excess mortality during four consecutive years. The evidence obtained indicated that influenza virus isolation alone does not represent a reliable index of epidemic influenza activity in this population. The proportion of deaths attributed to respiratory causes consistently increased in every epidemic, the most pronounced increases occurring during large epidemics. The break-down by age of deaths from respiratory causes in the course of two epidemic periods showed that the percentage distribution of deaths was essentially the same as in non-epidemic periods. This evidence indicates that the same factors influencing the age-related distribution of mortality from respiratory causes during non-epidemic periods, probably affect the fatal outcome of influenza during epidemics.</abstract><relatedItem type="host"><titleInfo><title>Journal of Hygiene</title></titleInfo><titleInfo type="abbreviated"><title>J. Hyg.</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><identifier type="ISSN">0022-1724</identifier><identifier type="PublisherID">HYG</identifier><part><date>1978</date><detail type="volume"><caption>vol.</caption><number>80</number></detail><detail type="issue"><caption>no.</caption><number>2</number></detail><extent unit="pages"><start>249</start><end>257</end><total>9</total></extent></part></relatedItem><identifier type="istex">44C9352A4CC8C4EA7B8BCDE69156A28EB7124468</identifier><identifier type="ark">ark:/67375/6GQ-MT09SQB7-3</identifier><identifier type="DOI">10.1017/S0022172400053602</identifier><identifier type="PII">S0022172400053602</identifier><identifier type="ArticleID">05360</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © Cambridge University Press 1978</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-G3RCRD03-V">cambridge</recordContentSource><recordOrigin>Copyright © Cambridge University Press 1978</recordOrigin></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/ark:/67375/6GQ-MT09SQB7-3/record.json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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