1. Baron S. Shigella. In: Hale TL, Keusch GT, editors. Baron’s medical microbiology. Galveston: University of Texas; 2000.
2. Mims C, Dockrell HM, Goering RV, Roit I, Wakelin D, Zukerman M. Medical microbiology. 3rd ed. Edinburgh: Elsevier; 2007.
3. Kotloff KL, Winickoff JP, Ivanoff B, Clemens JD, Swerdlow DL, et al. Global burden of Shigella infections: implications for vaccine development and implementation of control strategies. Bull World Health Organ. 1999;77:651–66.
4. Center for diseases control, Bacterial Foodborne and Diarrheal Disease National Case Surveillance: Annual Report. Atlanta: USA; 2005. Department of Health and Human Services.
5. European center for diseases control, Annual epidemiological report, 2013, reporting on 2011 surveillance data and 2012 epidemic intelligence data, Stockholm.