Vi antigen found in -: (A) Salmonella paratyphi 'C', (B) Salmonella Typhi, (C) Salmonella dublin, (D) All
Answer is D. Ans :D.)All The Vi antigen, is a capsular polysaccharide found mainly in Salmonella typhi and S. paratyphi C, as well as in a few strains of S. dublin and Citrobacter freundii