Linked Life Data

17786035

Source:http://linkedlifedata.com/resource/pubmed/id/17786035

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2007-10-5
pubmed:abstractText
Following the reduction in efficacy of Hib-TT vaccines in the primary immunization schedule observed in the UK between 1999 and 2003, batches of vaccine manufactured by two different companies were retrospectively examined by the National Institute for Biological Standards and Control. The study evaluated 41 batches of the Hib-TT vaccines manufactured between 1994 and 2003, assaying potency (total PRP saccharide content), integrity (% free saccharide), consistency (molecular sizing), and immunogenicity, as well as reviewing data previously obtained at the time of release. The study indicated the stability of the lyophilized final fill vaccines to extend well past their assigned shelf-lives, and found no trends in the endotoxin content, total saccharide or % free saccharide content. A trend towards slightly larger conjugates was observed over time in Hib-TT A, evidenced in both the manufacturer's data obtained at the time that samples were submitted for testing and in data obtained from the retrospective analysis. The study confirmed that that there had been no significant change in the quality of the Hib vaccines that could possibly account for the change reported in their protective efficacy in the UK. The study also demonstrated the value of independent testing of vaccines from the time of licensure and in the ongoing monitoring and re-examination of selected batches, as necessary, to assure their continuing quality, safety and consistency.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1554-8600
pubmed:author
pubmed:issnType
Print
pubmed:volume
3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
176-82
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:articleTitle
A retrospective study on the quality of Haemophilus influenzae type b vaccines used in the UK between 1996 and 2004.
pubmed:affiliation
Bacteriology Division, National Institute for Biological Standards and Control, Hertfordshire, UK. bbolgiano@nibsc.ac.uk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't