The capsular polysaccharide Vi from Salmonella typhi is a B1b antigen.
Marshall JL, Flores-Langarica A, Kingsley RA, Hitchcock JR, Ross EA, López-Macías C, Lakey J, Martin LB, Toellner KM, MacLennan CA, et al. J Immunol. 2012 Dec 15; 189(12):5527-32. Epub 2012 Nov 16.