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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2006-2-21
pubmed:abstractText
FluMist is a live-attenuated, trivalent influenza vaccine (LAIV) recently approved for intranasal administration. To demonstrate genetic stability during manufacture of the vaccine viruses in LAIV and a similar vaccine in development (CAIV-T), full genome consensus sequences were determined at multiple manufacturing stages for four influenza type A and five type B strains. The critical cold-adapted (ca), temperature-sensitive (ts) and attenuated (att) mutations were preserved in the virus manufacturing intermediates. Moreover, sequence identity was observed for all vaccine intermediates of the same strain. Minor sequence differences were noted in the shared gene segments of the vaccine viruses and their common progenitor master donor virus (MDV) and several of the hemagglutinin (HA) and neuraminidase (NA) genes contained nucleotide differences when compared to the wild-type parent. Nonetheless, all vaccine viruses retained the ca, ts, and att phenotypes. Thus, genetic and phenotypic stability of the vaccine viruses is maintained during the manufacture of LAIV/CAIV-T vaccines.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0264-410X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2151-60
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Genetic stability of live, cold-adapted influenza virus components of the FluMist/CAIV-T vaccine throughout the manufacturing process.
pubmed:affiliation
Department of Vaccines Discovery Research, Wyeth Research, 401N. Middletown Road, Pearl River, NY 10965, USA. buonagd@wyeth.com
pubmed:publicationType
Journal Article