If an experimental influenza vaccine containing hemagglutinin antigen shows a weak antibody response in initial trials, which consequence follows from adding an appropriate adjuvant?

💡 Explanation

Adjuvants enhance the immune response to vaccine antigens, specifically promoting stronger B cell activation and affinity maturation because they stimulate innate immune pathways, therefore leading to the production of higher-affinity antibodies, rather than decreasing antigen presentation or causing autoimmunity.

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