| Vaccine | 
        Immunization route | 
        No. of doses | 
        Developer | 
        Status | 
        References | 
      
      
        | Shigellosis | 
          | 
          | 
          | 
          | 
          | 
      
      
        | Attenuated S. sonnei strain WRSS1 | 
        Oral | 
        2 | 
        Walter Reed Army Institute of Research | 
        Phase II | 
        [70] | 
      
      
        | Attenuated S. flexneri2a strain CVD    1208S | 
        Oral | 
        2 | 
        Center for Vaccine Development,    University of Maryland | 
        Phase I | 
        [74] | 
      
      
        | Attenuated S. flexneri2a strain SC602 | 
        Oral | 
        1-2 | 
        Pasteur Institute | 
        Phase II | 
        [71] | 
      
      
        | Attenuated S. dysenteriae 1 strain SC599 | 
        Oral | 
        2 | 
        Pasteur Institute | 
        Phase II | 
        [73] | 
      
      
        | Shigellaglycoconjugates (O    polysaccharide covalently linked to carrier protein) | 
        Intra-muscular | 
        2 | 
        National Institute ofHealth and Human    Development | 
        Phase III | 
        [65] | 
      
      
        | Shigella invasion complex (Invaplex) | 
        Nasal | 
        3 | 
        Walter Reed Army Institute of Research | 
        Phase I | 
        [68] | 
      
      
        | Proteosomes (OMP of Group B    meningitides) to which S. sonnei or S. flexneri2a LPS is adsorbed | 
        Nasal | 
        2 | 
        ID Biomedical* | 
        Phase I | 
        [69] | 
      
      
        | ETEC diarrhea | 
          | 
          | 
          | 
          | 
          | 
      
      
        | B subunit-inactivated whole fimbriated    ETEC combination | 
        Oral | 
        2 | 
        University of Goteborg and SBL | 
        Phase III | 
        [82] | 
      
      
        | Attenuated fimbriated non-toxigenic E.    coli (derived from ETEC) | 
        Oral | 
        2 | 
        Cambridge Biostability Ltd. | 
        Phase I | 
        [88] | 
      
      
        | Attenuated Shigella strains expressing    ETEC fimbrial colonization factors and B subunit of LTh** | 
        Oral | 
        2 | 
        Center for Vaccine Development,    University of Maryland | 
        Phase I | 
        [86] |