A Live Attenuated Influenza Vaccine Elicits Enhanced Heterologous Protection When the Internal Genes of the Vaccine Are Matched to Those of the Challenge Virus.
Identifieur interne : 000004 ( PubMed/Checkpoint ); précédent : 000003; suivant : 000005A Live Attenuated Influenza Vaccine Elicits Enhanced Heterologous Protection When the Internal Genes of the Vaccine Are Matched to Those of the Challenge Virus.
Auteurs : Andrew Smith [États-Unis] ; Laura Rodriguez [États-Unis] ; Maya El Ghouayel [États-Unis] ; Aitor Nogales [États-Unis] ; Jeffrey M. Chamberlain [États-Unis] ; Katherine Sortino [États-Unis] ; Emma Reilly [États-Unis] ; Changyong Feng [États-Unis] ; David J. Topham [États-Unis] ; Luis Martínez-Sobrido [États-Unis] ; Stephen Dewhurst [États-Unis]Source :
- Journal of virology [ 1098-5514 ] ; 2020.
Abstract
Influenza A virus (IAV) causes significant morbidity and mortality, despite the availability of viral vaccines. The efficacy of live attenuated influenza vaccines (LAIVs) has been especially poor in recent years. One potential reason is that the master donor virus (MDV), on which all LAIVs are based, contains either the internal genes of the 1960 A/Ann Arbor/6/60 or the 1957 A/Leningrad/17/57 H2N2 viruses (i.e., they diverge considerably from currently circulating strains). We previously showed that introduction of the temperature-sensitive (ts) residue signature of the AA/60 MDV into a 2009 pandemic A/California/04/09 H1N1 virus (Cal/09) results in only 10-fold in vivo attenuation in mice. We have previously shown that the ts residue signature of the Russian A/Leningrad/17/57 H2N2 LAIV (Len LAIV) more robustly attenuates the prototypical A/Puerto Rico/8/1934 (PR8) H1N1 virus. In this work, we therefore introduced the ts signature from Len LAIV into Cal/09. This new Cal/09 LAIV is ts in vitro, highly attenuated (att) in mice, and protects from a lethal homologous challenge. In addition, when our Cal/09 LAIV with PR8 hemagglutinin and neuraminidase was used to vaccinate mice, it provided enhanced protection against a wild-type Cal/09 challenge relative to a PR8 LAIV with the same attenuating mutations. These findings suggest it may be possible to improve the efficacy of LAIVs by better matching the sequence of the MDV to currently circulating strains.IMPORTANCE Seasonal influenza infection remains a major cause of disease and death, underscoring the need for improved vaccines. Among current influenza vaccines, the live attenuated influenza vaccine (LAIV) is unique in its ability to elicit T-cell immunity to the conserved internal proteins of the virus. Despite this, LAIV has shown limited efficacy in recent years. One possible reason is that the conserved, internal genes of all current LAIVs derive from virus strains that were isolated between 1957 and 1960 and that, as a result, do not resemble currently circulating influenza viruses. We have therefore developed and tested a new LAIV, based on a currently circulating pandemic strain of influenza. Our results show that this new LAIV elicits improved protective immunity compared to a more conventional LAIV.
DOI: 10.1128/JVI.01065-19
PubMed: 31748399
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A Live Attenuated Influenza Vaccine Elicits Enhanced Heterologous Protection When the Internal Genes of the Vaccine Are Matched to Those of the Challenge Virus.</title><author><name sortKey="Smith, Andrew" sort="Smith, Andrew" uniqKey="Smith A" first="Andrew" last="Smith">Andrew Smith</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Rodriguez, Laura" sort="Rodriguez, Laura" uniqKey="Rodriguez L" first="Laura" last="Rodriguez">Laura Rodriguez</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="El Ghouayel, Maya" sort="El Ghouayel, Maya" uniqKey="El Ghouayel M" first="Maya" last="El Ghouayel">Maya El Ghouayel</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Nogales, Aitor" sort="Nogales, Aitor" uniqKey="Nogales A" first="Aitor" last="Nogales">Aitor Nogales</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Chamberlain, Jeffrey M" sort="Chamberlain, Jeffrey M" uniqKey="Chamberlain J" first="Jeffrey M" last="Chamberlain">Jeffrey M. 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Topham</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Martinez Sobrido, Luis" sort="Martinez Sobrido, Luis" uniqKey="Martinez Sobrido L" first="Luis" last="Martínez-Sobrido">Luis Martínez-Sobrido</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Dewhurst, Stephen" sort="Dewhurst, Stephen" uniqKey="Dewhurst S" first="Stephen" last="Dewhurst">Stephen Dewhurst</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA Stephen_Dewhurst@urmc.rochester.edu.</nlm:affiliation><country wicri:rule="url">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2020">2020</date><idno type="RBID">pubmed:31748399</idno><idno type="pmid">31748399</idno><idno type="doi">10.1128/JVI.01065-19</idno><idno type="wicri:Area/PubMed/Corpus">000004</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000004</idno><idno type="wicri:Area/PubMed/Curation">000004</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000004</idno><idno type="wicri:Area/PubMed/Checkpoint">000004</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000004</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">A Live Attenuated Influenza Vaccine Elicits Enhanced Heterologous Protection When the Internal Genes of the Vaccine Are Matched to Those of the Challenge Virus.</title><author><name sortKey="Smith, Andrew" sort="Smith, Andrew" uniqKey="Smith A" first="Andrew" last="Smith">Andrew Smith</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Rodriguez, Laura" sort="Rodriguez, Laura" uniqKey="Rodriguez L" first="Laura" last="Rodriguez">Laura Rodriguez</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="El Ghouayel, Maya" sort="El Ghouayel, Maya" uniqKey="El Ghouayel M" first="Maya" last="El Ghouayel">Maya El Ghouayel</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Nogales, Aitor" sort="Nogales, Aitor" uniqKey="Nogales A" first="Aitor" last="Nogales">Aitor Nogales</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Chamberlain, Jeffrey M" sort="Chamberlain, Jeffrey M" uniqKey="Chamberlain J" first="Jeffrey M" last="Chamberlain">Jeffrey M. Chamberlain</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Sortino, Katherine" sort="Sortino, Katherine" uniqKey="Sortino K" first="Katherine" last="Sortino">Katherine Sortino</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Reilly, Emma" sort="Reilly, Emma" uniqKey="Reilly E" first="Emma" last="Reilly">Emma Reilly</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Feng, Changyong" sort="Feng, Changyong" uniqKey="Feng C" first="Changyong" last="Feng">Changyong Feng</name><affiliation wicri:level="2"><nlm:affiliation>Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Topham, David J" sort="Topham, David J" uniqKey="Topham D" first="David J" last="Topham">David J. Topham</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Martinez Sobrido, Luis" sort="Martinez Sobrido, Luis" uniqKey="Martinez Sobrido L" first="Luis" last="Martínez-Sobrido">Luis Martínez-Sobrido</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Dewhurst, Stephen" sort="Dewhurst, Stephen" uniqKey="Dewhurst S" first="Stephen" last="Dewhurst">Stephen Dewhurst</name><affiliation wicri:level="2"><nlm:affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA Stephen_Dewhurst@urmc.rochester.edu.</nlm:affiliation><country wicri:rule="url">États-Unis</country><wicri:regionArea>Department of Microbiology and Immunology, University of Rochester, Rochester, New York</wicri:regionArea><placeName><region type="state">État de New York</region></placeName></affiliation></author></analytic><series><title level="j">Journal of virology</title><idno type="eISSN">1098-5514</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Influenza A virus (IAV) causes significant morbidity and mortality, despite the availability of viral vaccines. The efficacy of live attenuated influenza vaccines (LAIVs) has been especially poor in recent years. One potential reason is that the master donor virus (MDV), on which all LAIVs are based, contains either the internal genes of the 1960 A/Ann Arbor/6/60 or the 1957 A/Leningrad/17/57 H2N2 viruses (i.e., they diverge considerably from currently circulating strains). We previously showed that introduction of the temperature-sensitive (<i>ts</i>) residue signature of the AA/60 MDV into a 2009 pandemic A/California/04/09 H1N1 virus (Cal/09) results in only 10-fold <i>in vivo</i> attenuation in mice. We have previously shown that the <i>ts</i> residue signature of the Russian A/Leningrad/17/57 H2N2 LAIV (Len LAIV) more robustly attenuates the prototypical A/Puerto Rico/8/1934 (PR8) H1N1 virus. In this work, we therefore introduced the <i>ts</i> signature from Len LAIV into Cal/09. This new Cal/09 LAIV is <i>ts in vitro</i>, highly attenuated (<i>att</i>) in mice, and protects from a lethal homologous challenge. In addition, when our Cal/09 LAIV with PR8 hemagglutinin and neuraminidase was used to vaccinate mice, it provided enhanced protection against a wild-type Cal/09 challenge relative to a PR8 LAIV with the same attenuating mutations. These findings suggest it may be possible to improve the efficacy of LAIVs by better matching the sequence of the MDV to currently circulating strains.<b>IMPORTANCE</b> Seasonal influenza infection remains a major cause of disease and death, underscoring the need for improved vaccines. Among current influenza vaccines, the live attenuated influenza vaccine (LAIV) is unique in its ability to elicit T-cell immunity to the conserved internal proteins of the virus. Despite this, LAIV has shown limited efficacy in recent years. One possible reason is that the conserved, internal genes of all current LAIVs derive from virus strains that were isolated between 1957 and 1960 and that, as a result, do not resemble currently circulating influenza viruses. We have therefore developed and tested a new LAIV, based on a currently circulating pandemic strain of influenza. Our results show that this new LAIV elicits improved protective immunity compared to a more conventional LAIV.</div></front></TEI><pubmed><MedlineCitation Status="In-Data-Review" Owner="NLM"><PMID Version="1">31748399</PMID><DateRevised><Year>2020</Year><Month>02</Month><Day>12</Day></DateRevised><Article PubModel="Electronic-Print"><Journal><ISSN IssnType="Electronic">1098-5514</ISSN><JournalIssue CitedMedium="Internet"><Volume>94</Volume><Issue>4</Issue><PubDate><Year>2020</Year><Month>Jan</Month><Day>31</Day></PubDate></JournalIssue><Title>Journal of virology</Title><ISOAbbreviation>J. Virol.</ISOAbbreviation></Journal><ArticleTitle>A Live Attenuated Influenza Vaccine Elicits Enhanced Heterologous Protection When the Internal Genes of the Vaccine Are Matched to Those of the Challenge Virus.</ArticleTitle><ELocationID EIdType="pii" ValidYN="Y">e01065-19</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1128/JVI.01065-19</ELocationID><Abstract><AbstractText>Influenza A virus (IAV) causes significant morbidity and mortality, despite the availability of viral vaccines. The efficacy of live attenuated influenza vaccines (LAIVs) has been especially poor in recent years. One potential reason is that the master donor virus (MDV), on which all LAIVs are based, contains either the internal genes of the 1960 A/Ann Arbor/6/60 or the 1957 A/Leningrad/17/57 H2N2 viruses (i.e., they diverge considerably from currently circulating strains). We previously showed that introduction of the temperature-sensitive (<i>ts</i>) residue signature of the AA/60 MDV into a 2009 pandemic A/California/04/09 H1N1 virus (Cal/09) results in only 10-fold <i>in vivo</i> attenuation in mice. We have previously shown that the <i>ts</i> residue signature of the Russian A/Leningrad/17/57 H2N2 LAIV (Len LAIV) more robustly attenuates the prototypical A/Puerto Rico/8/1934 (PR8) H1N1 virus. In this work, we therefore introduced the <i>ts</i> signature from Len LAIV into Cal/09. This new Cal/09 LAIV is <i>ts in vitro</i>, highly attenuated (<i>att</i>) in mice, and protects from a lethal homologous challenge. In addition, when our Cal/09 LAIV with PR8 hemagglutinin and neuraminidase was used to vaccinate mice, it provided enhanced protection against a wild-type Cal/09 challenge relative to a PR8 LAIV with the same attenuating mutations. These findings suggest it may be possible to improve the efficacy of LAIVs by better matching the sequence of the MDV to currently circulating strains.<b>IMPORTANCE</b> Seasonal influenza infection remains a major cause of disease and death, underscoring the need for improved vaccines. Among current influenza vaccines, the live attenuated influenza vaccine (LAIV) is unique in its ability to elicit T-cell immunity to the conserved internal proteins of the virus. Despite this, LAIV has shown limited efficacy in recent years. One possible reason is that the conserved, internal genes of all current LAIVs derive from virus strains that were isolated between 1957 and 1960 and that, as a result, do not resemble currently circulating influenza viruses. We have therefore developed and tested a new LAIV, based on a currently circulating pandemic strain of influenza. Our results show that this new LAIV elicits improved protective immunity compared to a more conventional LAIV.</AbstractText><CopyrightInformation>Copyright © 2020 Smith et al.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Smith</LastName><ForeName>Andrew</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Medical Scientist Training Program, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Rodriguez</LastName><ForeName>Laura</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>El Ghouayel</LastName><ForeName>Maya</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Nogales</LastName><ForeName>Aitor</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Chamberlain</LastName><ForeName>Jeffrey M</ForeName><Initials>JM</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sortino</LastName><ForeName>Katherine</ForeName><Initials>K</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Reilly</LastName><ForeName>Emma</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Feng</LastName><ForeName>Changyong</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Department of Biostatistics and Computational Biology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Topham</LastName><ForeName>David J</ForeName><Initials>DJ</Initials><Identifier Source="ORCID">https://orcid.org/0000-0002-9435-8673</Identifier><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Martínez-Sobrido</LastName><ForeName>Luis</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Dewhurst</LastName><ForeName>Stephen</ForeName><Initials>S</Initials><Identifier Source="ORCID">https://orcid.org/0000-0001-7729-7920</Identifier><AffiliationInfo><Affiliation>Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA Stephen_Dewhurst@urmc.rochester.edu.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>01</Month><Day>31</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>J Virol</MedlineTA><NlmUniqueID>0113724</NlmUniqueID><ISSNLinking>0022-538X</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">IIV</Keyword><Keyword MajorTopicYN="N">LAIV</Keyword><Keyword MajorTopicYN="N">MDV</Keyword><Keyword MajorTopicYN="N">heterologous immunity and protection</Keyword><Keyword MajorTopicYN="N">inactivated influenza vaccine</Keyword><Keyword MajorTopicYN="N">influenza</Keyword><Keyword MajorTopicYN="N">live attenuated influenza vaccine</Keyword><Keyword MajorTopicYN="N">master donor virus</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2019</Year><Month>06</Month><Day>25</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2019</Year><Month>11</Month><Day>08</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2019</Year><Month>11</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2019</Year><Month>11</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>11</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>epublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">31748399</ArticleId><ArticleId IdType="pii">JVI.01065-19</ArticleId><ArticleId IdType="doi">10.1128/JVI.01065-19</ArticleId><ArticleId IdType="pmc">PMC6997774</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>J Virol. 2006 Dec;80(23):11756-66</Citation><ArticleIdList><ArticleId IdType="pubmed">16971435</ArticleId></ArticleIdList></Reference></ReferenceList><ReferenceList><Reference><Citation>J Infect Dis. 2011 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