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Pneumococcal Vaccine

 Streptococcus iron-uptake lipoproteins elicit antibody responses

Published in Vaccine Weekly, March 23rd, 2005

PiuA and PiaA, iron-uptake lipoproteins of Streptococcus pneumoniae, elicit serotype-independent antibody responses following human pneumococcal septicemia.

"Streptococcus pneumoniae causes considerable morbidity and mortality worldwide. The need for a cheap and effective pneumococcal vaccine has necessitated the evaluation of common virulence-associated proteins as potential vaccine antigens. PiuA and PiaA are the lipoprotein components of two pneumococcal iron ABC transporters," investigators in England report.

"Here, we show that patients with culture confirmed pneumococcal septicemia have elevated levels of antibody to PiuA and PiaA...

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