ViroStat has released two sets of new monoclonal antibodies to Shigella: one set specific to Shigella sonnei and another set specific to Shigella flexneri 2a. Potential applications for these antibodies include direct bacterial detection by ELISA and lateral-flow rapid tests. Shigellosis is a foodborne gastrointestinal illness caused by several species of Shigella bacteria. Transmission is via the fecal–oral route, and symptoms include cramps and diarrhea, which can progress to dysentery. S. sonnei is the leading cause of shigellosis in industrialized countries, while S. flexneri is the most common species seen in developing countries; the predominate serotype of the latter is S. flexneri 2a.