id author title date pages extension mime words sentences flesch summary cache txt cord-000013-pr9i9swk Croyle, Maria A. Nasal Delivery of an Adenovirus-Based Vaccine Bypasses Pre-Existing Immunity to the Vaccine Carrier and Improves the Immune Response in Mice 2008-10-29 .txt text/plain 6509 272 37 We have previously found that a single dose of a recombinant adenovirus expressing Ebola Zaire GP given by either the oral or the nasal route is capable of affording protection against lethal challenge in naïve mice and that mucosal immunization can stimulate a broad, prolonged T cell-mediated immune response in both the systemic and mucosal compartments [37] . In an effort to correlate markers of immunity with protection against Ebola infection after mucosal immunization, T and B cell specific immune responses against Ebola glycoprotein were analyzed in mice in the presence or absence of pre-existing immunity (PEI) to adenovirus 10 days after vaccination with a first generation adenovirus serotype 5 vector expressing the Zaire Ebola glycoprotein (Ad5-ZGP). A single intranasal dose of a recombinant Ad5 vaccine expressing the Zaire Ebola glycoprotein conferred 100% protection in both naïve mice and those with pre-existing immunity despite the fact that the strength of the immune response generated by this route of administration was quantitatively lower than that seen in animals vaccinated by intramuscular injection. ./cache/cord-000013-pr9i9swk.txt ./txt/cord-000013-pr9i9swk.txt