Abstract:
:Influenza A virus is characterized by high genetic diversity. However, most of what is known about influenza evolution has come from consensus sequences sampled at the epidemiological scale that only represent the dominant virus lineage within each infected host. Less is known about the extent of within-host virus diversity and what proportion of this diversity is transmitted between individuals. To characterize virus variants that achieve sustainable transmission in new hosts, we examined within-host virus genetic diversity in household donor-recipient pairs from the first wave of the 2009 H1N1 pandemic when seasonal H3N2 was co-circulating. Although the same variants were found in multiple members of the community, the relative frequencies of variants fluctuated, with patterns of genetic variation more similar within than between households. We estimated the effective population size of influenza A virus across donor-recipient pairs to be approximately 100-200 contributing members, which enabled the transmission of multiple lineages, including antigenic variants.
journal_name
Nat Genetjournal_title
Nature geneticsauthors
Poon LL,Song T,Rosenfeld R,Lin X,Rogers MB,Zhou B,Sebra R,Halpin RA,Guan Y,Twaddle A,DePasse JV,Stockwell TB,Wentworth DE,Holmes EC,Greenbaum B,Peiris JS,Cowling BJ,Ghedin Edoi
10.1038/ng.3479subject
Has Abstractpub_date
2016-02-01 00:00:00pages
195-200issue
2eissn
1061-4036issn
1546-1718pii
ng.3479journal_volume
48pub_type
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