- Isolation of Shigella dysenteriae type 1 and S. flexneri strains from surface waters in Bangladesh: comparative molecular analysis of environmental Shigella isolates versus clinical strains. Faruque, S.M., Khan, R., Kamruzzaman, M., Yamasaki, S., Ahmad, Q.S., Azim, T., Nair, G.B., Takeda, Y., Sack, D.A. Appl. Environ. Microbiol. (2002)