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File: /var/www/html/application/controllers/Detail.php
File: /var/www/html/index.php
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File: /var/www/html/application/controllers/Detail.php
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Genealogy of an passaged isolate of western Canadian bovine respiratory syncytial virus. | LitMetric
Bovine respiratory syncytial virus (BRSV) is a primary respiratory pathogen in calves. Clinical infection with this pathogen has been experimentally modelled to assess vaccine efficacy using a field isolate (Asquith) of BRSV that has been sequentially passaged in neonatal calves to maintain virulence. The objective of this retrospective cumulative analysis of passages over approximately 20 years was to determine if there have been any changes in the viral genome of this isolate because of this process. Sequence analyses indicated that the Asquith isolate placed genetically in a clade comprising US and some European isolates and a recently described Chinese BRSV isolate (DQ). Furthermore, there were rare changes in bases over time in the N, G, and F gene segments examined when comparing among different passages ranging from 1996 to 2019. These results indicated the absence of significant mutations in the absence of significant adaptive immunological pressure.
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