icsA/virG from Shigella obsolete icsA/virG from Shigella true Oliver He 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 NCBI_Gene_ID: 1238021; PMID: 7927802 Rebecca Racz terms merged