We also observed a strong agreement of CTB-specific antibody responses between DBS eluates and plasma of cholera patients (ICC: IgA = 0.9, IgG = 0.9 and IgM = 0.5; Fig 3D–3F) and vaccinees (ICC: IgA = 0.6, IgG = 0.7 and IgM = 0.6; Fig 4D–4F). The gene discussed is CD79A; the disease is vibrio infectious disease.