Melioidosis is caused by the gram-negative saprophytic bacterium Burkholderia pseudomallei, which is endemic to southeast Asia and northern Australia. We have previously found evidence of geographic localization of strains based on multilocus sequence typing.
Cheng, A., Ward, L., Godoy, D., Norton, R., Mayo, M., Gal, D., Spratt, B., & Currie, B. (2008). Genetic diversity of burkholderia pseudomallei isolates in Australia. Journal of Clinical Microbiology, 46(1), 249 - 254. https://doi.org/10.1128/JCM.01725-07