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This query refers to two separate hepatitis A vaccines that have been compared in clinical studies. **Havrix** is a hepatitis A vaccine manufactured by GlaxoSmithKline (GSK). **Healive** is a Chinese WHO-prequalified inactivated hepatitis A vaccine. Both are inactivated hepatitis A virus vaccines approved for use in persons 12 months of age and older. A comparative study mentioned in the search results indicated that Healive demonstrated stronger protective effects and better antibody persistence than Havrix at 15 years post-vaccination, with prediction indicating at least 30 years of antibody persistence for Healive compared to at least 25 years for Havrix.
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