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(a) Intranasal NOMV-specific IgG antibody titer normalized to the total IgG measured in the nasal secretion specimen. The asterisk indicates statistical significance; P < 0.05. (b) Intranasal NOMV-specific IgA antibody titer normalized to the total IgA measured in the nasal secretion specimen. The asterisk indicates statistical significance; P < 0.05. Interquartile ranges and maximum and minimum excluding outliers are shown.
