...
References
1http://en.wikipedia.org/wiki/Shigella
2Scallan et al. 2011.Emerging Infectious Diseases 17:7-15 PMID:21192848
3http://www.who.int/vaccine_research/diseases/diarrhoeal/en/index6.html
4B. L. Nygren et al. 2012. Foodborne outbreaks of shigellosis in the USA, 1998--2008. Epidemiology and Infection. FirstView Article : pp 1-9; http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8498869.
...