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Background:. This study was designed to assess the early antibody kinetics after a priming dose, and the extent of the antibody increase after a booster dose of an inactivated virosomal hepatitis A virus (HAV) vaccine (Epaxal). Patients and Methods:. This was an open, uncontrolled study in 30 healthy subjects. The vaccine was injected intramuscularly on day 1 and month 12. Serum antibody titers were...
Although more than 95% of the vaccinated population responds to the currently licensed vaccines against hepatitis B, some groups were found to be low responders. Lipid A as adjuvant, through its ability to activate macrophages, might improve humoral as well as cellular immune response. Therefore we evaluated the profile of a hepatitis B vaccine with the new adjuvant system SBAS4. 150 young adults...
In this study we investigated a new liposomal hepatitis A vaccine (Epaxal ) developed by the Swiss Serum and Vaccine Institute clinically and immunologically using a one dose priming schedule and a booster injection after 1 year. This vaccine contains formalin inactivated hepatitis A virus particles attached to phospholipid vesicles together with influenza virus haemagglutinin. Two doses of the...
During the clinical development of safe, well tolerated and immunogenic vaccines against hepatitis A the persistence of protective antibodies was estimated, based on relatively short observation periods of 18 months to 3 years. We report here on longterm persistence of antibodies in volunteers who participated in one of the early clinical trials on inactivated hepatitis A candidate vaccines. In...
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