Prevention of Shigellosis by a Salmonella typhi-Shigella sonnei Bivalent Vaccine
- 1 June 1987
- journal article
- research article
- Published by Oxford University Press (OUP) in The Journal of Infectious Diseases
- Vol. 155 (6), 1260-1265
- https://doi.org/10.1093/infdis/155.6.1260
Abstract
We genetically modified attenuated Salmonella typhi strain Ty21a to express the form IO polysaccharide antigen of Shigella sonnet. Three doses of this bivalent, live oral vaccine strain (1–8 × 109 organisms/dose) were given to young adults who, along with unvaccinated controls, were challenged one month later with pathogenic S. sonnei. The vaccinees had 40% protection against diarrhea and 56% against Hematest®-positive diarrhea. Two of three vaccine lots provided higher levels of protection (53% against diarrhea and 71% against Hematest-positive diarrhea), but the third lot, prepared for a large-scale field trial, demonstrated no protective efficacy. Vaccinees had serum and local intestinal immune responses to S. sonnei lipopolysaccharide, and the presence of specific serum 19A or IgG antibody before challenge with pathogenic S. sonnei was correlated with protection from illness. Some lots of this bivalent vaccine strain provide significant protection against S. sonnei disease, but the problem of lot-to-Iot variability must be overcome.Keywords
This publication has 12 references indexed in Scilit:
- Safety and Antigenicity of Typhoid-Shigella sonnei Vaccine (Strain 5076-1C)The Journal of Infectious Diseases, 1984
- Evaluation in humans of attenuated Vibrio cholerae El Tor Ogawa strain Texas Star-SR as a live oral vaccineInfection and Immunity, 1984
- Intestinal immunoglobulin A responses in rabbits to a Salmonella typhi strain harboring a Shigella sonnei plasmidInfection and Immunity, 1982
- A Controlled Field Trial of Live Salmonella typhi Strain Ty 21a Oral Vaccine Against Typhoid: Three-Year ResultsThe Journal of Infectious Diseases, 1982
- Construction of a potential bivalent vaccine strain: introduction of Shigella sonnei form I antigen genes into the galE Salmonella typhi Ty21a typhoid vaccine strainInfection and Immunity, 1981
- Microtiter enzyme-linked immunosorbent assay for immunoglobulin G cholera antitoxin in humans: method and correlation with rabbit skin vascular permeability factor techniqueInfection and Immunity, 1980
- Evaluation of a UDP-Glucose-4-Epimeraseless Mutant of Salmonella typhi as a Live Oral VaccineThe Journal of Infectious Diseases, 1977
- Studies with a New Generation of Oral Attenuated Shigella Vaccine: Escherichia coli Bearing Surface Antigens of Shigella flexneriThe Journal of Infectious Diseases, 1977
- Attenuated, Streptomycin-Dependent Salmonella typhi Oral Vaccine: Potential Deleterious Effects of LyophilizationThe Journal of Infectious Diseases, 1976
- STUDIES ON VACCINATION AGAINST BACILLARY DYSENTERY .3. EFFECTIVE ORAL IMMUNIZATION AGAINST SHIGELLA FLEXNERI 2A IN A FIELD TRIAL1965