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Serum IgG responses preceding asymptomatic ETEC colonization and diarrhea. Shown are peak serum IgG responses for EtpA (left) or the EatA passenger domain (right) preceding either asymptomatic colonization or diarrheal illness with ETEC. Data shown are log10-transformed IgG antibody responses determined by a kinetic ELISA. Bars represent mean values. P values reflect Student’s t testing.
