A Missed Summer Wave of the 1918-1919 Influenza Pandemic: Evidence From Household Surveys in the United States and Norway.
Identifieur interne : 000542 ( PubMed/Corpus ); précédent : 000541; suivant : 000543A Missed Summer Wave of the 1918-1919 Influenza Pandemic: Evidence From Household Surveys in the United States and Norway.
Auteurs : Svenn-Erik Mamelund ; Bj Rn Haneberg ; Siri MjaalandSource :
- Open forum infectious diseases [ 2328-8957 ] ; 2016.
Abstract
Background. Reanalysis of influenza survey data from 1918 to 1919 was done to obtain new insights into the geographic and host factors responsible for the various waves. Methods. We analyzed the age- and sex-specific influenza morbidity, fatality, and mortality for the city of Baltimore and smaller towns and rural areas of Maryland and the city of Bergen (Norway), using survey data. The Maryland surveys captured the 1918 fall wave, whereas the Bergen survey captured 3 waves during 1918-1919. Results. Morbidity in rural areas of Maryland was higher than in the city of Baltimore during the fall of 1918, that was almost equal to that in Bergen during the summer of 1918. In Bergen, the morbidity in the fall was only half of that in the summer, with more females than males just above the age of 20 falling ill, as seen in both regions of Maryland. In contrast, more males than females fell ill during the summer wave in Bergen. Individuals <40 years had the highest morbidity, whereas school-aged children had the lowest fatality and mortality. Conclusion. A previously unrecognized pandemic summer wave may have hit the 2 regions of Maryland in 1918.
DOI: 10.1093/ofid/ofw040
PubMed: 27006964
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A Missed Summer Wave of the 1918-1919 Influenza Pandemic: Evidence From Household Surveys in the United States and Norway.</title><author><name sortKey="Mamelund, Svenn Erik" sort="Mamelund, Svenn Erik" uniqKey="Mamelund S" first="Svenn-Erik" last="Mamelund">Svenn-Erik Mamelund</name><affiliation><nlm:affiliation>Work Research Institute; Oslo and Akershus University College of Applied Sciences.</nlm:affiliation></affiliation></author><author><name sortKey="Haneberg, Bj Rn" sort="Haneberg, Bj Rn" uniqKey="Haneberg B" first="Bj Rn" last="Haneberg">Bj Rn Haneberg</name><affiliation><nlm:affiliation>Department of Bacteriology and Immunology, Division of Environmental Medicine and Infectious Disease Control , Norwegian Institute of Public Health.</nlm:affiliation></affiliation></author><author><name sortKey="Mjaaland, Siri" sort="Mjaaland, Siri" uniqKey="Mjaaland S" first="Siri" last="Mjaaland">Siri Mjaaland</name><affiliation><nlm:affiliation>Department of Bacteriology and Immunology, Division of Environmental Medicine and Infectious Disease Control, Norwegian Institute of Public Health; KG Jebsen Centre for Influenza Vaccine Research, University of Oslo, Norway.</nlm:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2016">2016</date><idno type="RBID">pubmed:27006964</idno><idno type="pmid">27006964</idno><idno type="doi">10.1093/ofid/ofw040</idno><idno type="wicri:Area/PubMed/Corpus">000542</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000542</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">A Missed Summer Wave of the 1918-1919 Influenza Pandemic: Evidence From Household Surveys in the United States and Norway.</title><author><name sortKey="Mamelund, Svenn Erik" sort="Mamelund, Svenn Erik" uniqKey="Mamelund S" first="Svenn-Erik" last="Mamelund">Svenn-Erik Mamelund</name><affiliation><nlm:affiliation>Work Research Institute; Oslo and Akershus University College of Applied Sciences.</nlm:affiliation></affiliation></author><author><name sortKey="Haneberg, Bj Rn" sort="Haneberg, Bj Rn" uniqKey="Haneberg B" first="Bj Rn" last="Haneberg">Bj Rn Haneberg</name><affiliation><nlm:affiliation>Department of Bacteriology and Immunology, Division of Environmental Medicine and Infectious Disease Control , Norwegian Institute of Public Health.</nlm:affiliation></affiliation></author><author><name sortKey="Mjaaland, Siri" sort="Mjaaland, Siri" uniqKey="Mjaaland S" first="Siri" last="Mjaaland">Siri Mjaaland</name><affiliation><nlm:affiliation>Department of Bacteriology and Immunology, Division of Environmental Medicine and Infectious Disease Control, Norwegian Institute of Public Health; KG Jebsen Centre for Influenza Vaccine Research, University of Oslo, Norway.</nlm:affiliation></affiliation></author></analytic><series><title level="j">Open forum infectious diseases</title><idno type="ISSN">2328-8957</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Background. Reanalysis of influenza survey data from 1918 to 1919 was done to obtain new insights into the geographic and host factors responsible for the various waves. Methods. We analyzed the age- and sex-specific influenza morbidity, fatality, and mortality for the city of Baltimore and smaller towns and rural areas of Maryland and the city of Bergen (Norway), using survey data. The Maryland surveys captured the 1918 fall wave, whereas the Bergen survey captured 3 waves during 1918-1919. Results. Morbidity in rural areas of Maryland was higher than in the city of Baltimore during the fall of 1918, that was almost equal to that in Bergen during the summer of 1918. In Bergen, the morbidity in the fall was only half of that in the summer, with more females than males just above the age of 20 falling ill, as seen in both regions of Maryland. In contrast, more males than females fell ill during the summer wave in Bergen. Individuals <40 years had the highest morbidity, whereas school-aged children had the lowest fatality and mortality. Conclusion. A previously unrecognized pandemic summer wave may have hit the 2 regions of Maryland in 1918. </div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">27006964</PMID><DateCompleted><Year>2016</Year><Month>03</Month><Day>23</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Print">2328-8957</ISSN><JournalIssue CitedMedium="Print"><Volume>3</Volume><Issue>1</Issue><PubDate><Year>2016</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Open forum infectious diseases</Title><ISOAbbreviation>Open Forum Infect Dis</ISOAbbreviation></Journal><ArticleTitle>A Missed Summer Wave of the 1918-1919 Influenza Pandemic: Evidence From Household Surveys in the United States and Norway.</ArticleTitle><Pagination><MedlinePgn>ofw040</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/ofid/ofw040</ELocationID><Abstract><AbstractText>Background. Reanalysis of influenza survey data from 1918 to 1919 was done to obtain new insights into the geographic and host factors responsible for the various waves. Methods. We analyzed the age- and sex-specific influenza morbidity, fatality, and mortality for the city of Baltimore and smaller towns and rural areas of Maryland and the city of Bergen (Norway), using survey data. The Maryland surveys captured the 1918 fall wave, whereas the Bergen survey captured 3 waves during 1918-1919. Results. Morbidity in rural areas of Maryland was higher than in the city of Baltimore during the fall of 1918, that was almost equal to that in Bergen during the summer of 1918. In Bergen, the morbidity in the fall was only half of that in the summer, with more females than males just above the age of 20 falling ill, as seen in both regions of Maryland. In contrast, more males than females fell ill during the summer wave in Bergen. Individuals <40 years had the highest morbidity, whereas school-aged children had the lowest fatality and mortality. Conclusion. A previously unrecognized pandemic summer wave may have hit the 2 regions of Maryland in 1918. </AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Mamelund</LastName><ForeName>Svenn-Erik</ForeName><Initials>SE</Initials><AffiliationInfo><Affiliation>Work Research Institute; Oslo and Akershus University College of Applied Sciences.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Haneberg</LastName><ForeName>Bjørn</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Department of Bacteriology and Immunology, Division of Environmental Medicine and Infectious Disease Control , Norwegian Institute of Public Health.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mjaaland</LastName><ForeName>Siri</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Department of Bacteriology and Immunology, Division of Environmental Medicine and Infectious Disease Control, Norwegian Institute of Public Health; KG 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