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J Virol, March 1998, p. 1790-1796, Vol. 72, No. 3
The Wistar Institute, Philadelphia,
Pennsylvania
Received 24 October 1997/Accepted 24 November 1997
A plasmid vector, termed pSG5rab.gp, expressing the glycoprotein of
rabies virus was tested in young adult or neonatal mice in the presence
of maternally transferred immunity or passively administered antibodies
to rabies virus for induction of an antibody response. Mice born to
rabies virus-immune dams developed an impaired antibody response to
genetic immunization at 6 weeks of age, as had been previously observed
upon vaccination with an inactivated viral vaccine. Similarly, mice
passively immunized with hyperimmune serum showed an inhibited B-cell
response upon vaccination with the pSG5rab.gp vector, resulting in both
cases in vaccine failures upon challenge with a virulent strain of
rabies virus. In contrast, the immune responses of mice vaccinated as
neonates in the presence of maternal immunity or upon passive
immunization to rabies virus with the pSG5rab.gp construct were only
marginally affected.
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Effect of Passive Immunization or Maternally Transferred Immunity
on the Antibody Response to a Genetic Vaccine to Rabies Virus

*
Corresponding author. Mailing address: The Wistar
Institute, 3601 Spruce St., Philadelphia, PA 19104-4268. Phone: (215)
898-3863. Fax: (215) 898-3953. E-mail:
Ertl{at}wista.wistar.upenn.edu
Present address: NYU Medical Center, Skirball Institute, New York,
NY 10016.
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