Shigella bacteria are a common cause of diarrhea around the world. There are four strains of Shigella - Shigella boydii, Shigella dysenteriae, Shigella flexneri, and Shigella sonnei - that can infect humans. Of these, S. flexneri and S. sonnei are responsible for the majority of shigellosis cases globally. Left untreated, shigellosis can be fatal, especially in young children. According to the World Health Organization (WHO), there are an estimated 100 to 200 million shigellosis cases ... Read more
