Abstract:
:Lyme disease, caused by the bacterium Borrelia burgdorferi sensu stricto, is an emerging zoonotic disease in Canada and is vectored by the blacklegged tick, Ixodes scapularis. Here we used Bayesian analyses of sequence types (STs), determined by multilocus sequence typing (MLST), to investigate the phylogeography of B. burgdorferi populations in southern Canada and the United States by analyzing MLST data from 564 B. burgdorferi-positive samples collected during surveillance. A total of 107 Canadian samples from field sites were characterized as part of this study, and these data were combined with existing MLST data for samples from the United States and Canada. Only 17% of STs were common between both countries, while 49% occurred only in the United States, and 34% occurred only in Canada. However, STs in southeastern Ontario and southwestern Quebec were typically identical to those in the northeastern United States, suggesting a recent introduction into this region from the United States. In contrast, STs in other locations in Canada (the Maritimes; Long Point, Ontario; and southeastern Manitoba) were frequently unique to those locations but were putative descendants of STs previously found in the United States. The picture in Canada is consistent with relatively recent introductions from multiple refugial populations in the United States. These data thus point to a geographic pattern of populations of B. burgdorferi in North America that may be more complex than simply comprising northeastern, midwestern, and Californian groups. We speculate that this reflects the complex ecology and spatial distribution of key reservoir hosts.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Mechai S,Margos G,Feil EJ,Lindsay LR,Ogden NHdoi
10.1128/AEM.03730-14subject
Has Abstractpub_date
2015-02-01 00:00:00pages
1309-18issue
4eissn
0099-2240issn
1098-5336pii
AEM.03730-14journal_volume
81pub_type
杂志文章abstract::Noroviruses from mussels collected near sewage effluents were compared with local patient outbreak strains. Sequence analyses of RNA polymerase-capsid-poly(A)-3' (3.1-kilobase) regions confirmed the 99.9% similarity between genotype I.1 strains from mussels and patient strains from recreational-bathing outbreaks, indi...
journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.35.1.185-191.1978
更新日期:1978-01-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:1983-08-01 00:00:00
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更新日期:1979-10-01 00:00:00
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journal_title:Applied and environmental microbiology
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1998-12-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2017-05-17 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2011-08-15 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:1992-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2016-05-31 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.5.1178-1186.1989
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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