Polyanionic polymer adjuvants for haemophilus influenzae B...

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Bacterium or component thereof or substance produced by said...

Reexamination Certificate

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C424S234100, C424S236100, C424S240100, C424S238100, C424S239100, C424S245100, C424S201100, C424S193100, C536S123100

Reexamination Certificate

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08007818

ABSTRACT:
The present invention relates to the field of vaccines, and in particular vaccines comprising antigens of low isoelectric point at pH 7.0, in particular the capsular polysaccharide or oligosaccharide ofH. influenzaeB (PRP). Immunogenic compositions and methods of making such compositions are presented in which the PRP is surprisingly protected from immune interference by adding a polyanionic polymer (such as PLG-poly-L-glutamic acid) to the composition.

REFERENCES:
patent: WO 98/17310 (1998-04-01), None
patent: WO 02/00249 (2002-01-01), None
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