NEU1 and vibrio infectious disease: Consistently, patients who recover from cholera develop systemic IgM, IgG, and IgA antibodies, as well as secretory IgA (sIgA) antibodies, which target several antigens, including CTX-A and CTX-B subunits, LPS, O-specific polysaccharide (OSP), LPS, NanH, flagellins (FlaB, FlaC, and FlaD), TcpA, and HlyA (139, 198–204).