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Infectious Disease Vaccine

Fusion of pneumococcal surface adhesin and cytokine genes increases efficacy

Published in Vaccine Weekly, October 16th, 2002

by Michael Greer, senior medical writer - Researchers in the United States have found a novel technique for improving the efficacy of an antipneumococcal vaccine.

"Immunization of mice with pneumococcal surface adhesin A (PsaA) emulsified in complete Freund's adjuvant (CFA) provides protection against systemic infection with Streptococcus pneumoniae," but CFA is not suitable for use with humans, explained Dennis O. Gor and colleagues at Case Western Reserve University in Cleveland.

Fusing PsaA genes with those coding for immunostimulatory cytokines produced a similar enhancement without the use of CFA although the resulting vaccine was still...

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