senA from Shigella obsolete senA from Shigella true A virG, senA, and senB mutant (WRSs2) is attenuated in guinea pigs and induced significant protection from challenge with wild type S. sonnei. Attenuation and protection from WRSs2 is comparable to live attenuated vaccine strain WRSS1 Oliver He NCBI_Gene_ID: 3671021; PMID: 19932216 Rebecca Racz terms merged