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A randomised comparison of two inactivated hepatitis A vaccines, Avaxim and Vaqta, given as a booster to subjects primed with Avaxim.

Author(s): Clarke P, Kitchin N, Souverbie F

Affiliation(s): MASTA, 29 Harley Street, W1N 1DA, London, UK.

Publication date & source: 2001-08-14, Vaccine., 19(31):4429-33.

Publication type: Clinical Trial; Clinical Trial, Phase I; Randomized Controlled Trial

To investigate whether Vaqta may be used as a booster in subjects primed with Avaxim, 127 adults primed 6 months previously with Avaxim were randomised to receive either Vaqta or Avaxim as a booster. Prior to the booster all subjects were seropositive. Geometric mean antibody titres increased from 496 to 7262 mIU/mL 1 month after receiving Vaqta as a booster and from 325 to 5131 mIU/mL 1 month after receiving Avaxim as a booster. Both vaccines were well tolerated; 20.3% of subjects receiving Vaqta experienced a local reaction, compared to 39.7% of those receiving Avaxim. Systemic reactions were reported by 15.6% of those receiving Vaqta and 14.3% of those receiving Avaxim. Vaqta may be used as a booster in subjects primed with Avaxim.

Page last updated: 2006-01-31

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