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To guide the use of modified vaccinia Ankara (MVA) vaccine in response to a release of smallpox virus, the immunogenicity and safety of shorter vaccination intervals, and administration by jet injector (JI), were compared to the standard schedule of administration on Days 1 and 29 by syringe and needle (S&N).Healthy adults 18–40years of age were randomly assigned to receive MVA vaccine subcutaneously...
Modified vaccinia Ankara (MVA) is being developed as a safer smallpox vaccine and is being placed in the US Strategic National Stockpile (SNS) as a liquid formulation for subcutaneous (SC) administration at a dose of 1×108 TCID50 in a volume of 0.5mL. This study compared the safety and immunogenicity of the standard formulation, dose and route with both a more stable, lyophilized formulation and with...
We evaluated an alternative administration route, reduced schedule priming series, and increased intervals between booster doses for anthrax vaccine adsorbed (AVA). AVA's originally licensed schedule was 6 subcutaneous (SQ) priming injections administered at months (m) 0, 0.5, 1, 6, 12 and 18 with annual boosters; a simpler schedule is desired.Through a multicenter randomized, double blind, non-inferiority...
Dose-sparing strategies and new production technologies will be necessary to produce adequate supplies of vaccines for pandemic influenza. One approach is to include adjuvant, which can reduce the amount of antigen required for immunization and stimulate cross-reactive responses to drifted variants of novel viruses. Dose-sparing studies of adjuvant, itself a finite resource, have not previously been...
To augment the available influenza vaccine supply, a phase III study was conducted to evaluate the immunogenicity, safety, and consistency of a new trivalent inactivated influenza vaccine manufactured by CSL Limited. Healthy adults (ages 18–64) were randomized to receive either a single dose of TIV from multi-dose vials with thimerosal, TIV from pre-filled syringes without thimerosal, or placebo....
Protective antigen (PA) is the cell surface recognition moiety of the Bacillus anthracis A-B toxin system, and the active immunogenic component in the currently licensed human anthrax vaccine (BioThrax™, or AVA). The serum antibody response to the PA protein is polyclonal and complex both in terms of the antibody combining sites utilized to bind PA and the PA-associated epitopes recognized. We have...
The active component of the licensed human anthrax vaccine (BioThrax™, or AVA) is a Bacillus anthracis toxin known as protective antigen (PA). Second generation anthrax vaccines currently under development are also based on a recombinant form of PA. Since the current and future anthrax vaccines are based on this toxin, it is important that the immunobiology of this protein in vaccinated humans be...
We report the results of a phase I dose escalation, safety and immunogenicity trial of a new recombinant protective antigen (rPA102) anthrax vaccine.Hundred healthy volunteers were randomized in a 4:1 ratio to receive intramuscular doses of rPA102 in the following formulations: 5, 25, 50, or 75μg of rPA102 in 82.5μg aluminum hydroxide adjuvant at 0, 4, and 8 weeks; or the US licensed Anthrax Vaccine...
Because of delays in the manufacturing of the 2000-2001, trivalent inactivated influenza vaccine in the US, there were concerns that there might be shortages of vaccine supply in the US. Therefore, we conducted a prospective, randomized, open-label, multicenter trial at six academic medical centers in the US, to evaluate the immunogenicity of a half dose of inactivated vaccine in healthy adults. Healthy...
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