has role immunizes recipient immunizes against pathogen test in lab animal model Cavia porcellus Shigella sonnei Homo sapiens vaccine in research role Shigella sonnei virG mutant vaccine Rebecca Racz A stable attenuated Shigella sonnei strain with virG mutation. PMID:9712824. 264 PMID:11895966 A virG mutant (WRSS1) is attenuated in guinea pigs and induced significant protection from challenge with wild type Shigella sonnei PMID:9712824 vaccine VIOLIN: https://violinet.org/vaxquery/vaccine_detail.php?c_vaccine_id=264 An aroA and virG mutant (CVD 1203) is attenuated in guinea pigs, as shown by the Sereny test. Guinea pigs inoculated with CVD 1203 were also protected from challenge with wild type S. flexneri Oliver He Shigella sonnei vaccine