Klebsiella michiganensis is a species of bacteria in the genus Klebsiella and is one of the nine species in the Klebsiella oxytoca complex.Yang, J., Long, H., Hu, Y., Feng, Y., McNally, A., & Zong, Z. (2022). Klebsiella oxytoca complex: Update on taxonomy, antimicrobial resistance, and virulence. Clinical Microbiology Reviews, 35(1). https://doi.org/10.1128/cmr.00006-21 It is closely related to the species K. oxytoca except K. michiganensis is negative in the pectin degradation test and negative by PCR for polygalacturonase gene pehX. The name K. michiganensis comes from the United States' state of Michigan, where the species was originally isolated from a toothbrush holder.Saha, R., Farrance, C. E., Verghese, B., Hong, S., & Donofrio, R. S. (2012). Klebsiella michiganensis sp. nov., a new bacterium isolated from a tooth brush holder. Current Microbiology, 66(1), 72–78. https://doi.org/10.1007/s00284-012-0245-x The designated type strain ‘W14’ has been deposited in multiple international culture collections, making it widely accessible for research. It is capable of biofilm formation Saha, R., Saha, N., Atwain, A. et al. Evaluation of disinfection efficacy of ozone and chlorinated disinfectant against the biofilm of Klebsiella michiganensis and Pseudomonas aeruginosa . Ann Microbiol 64, 1607–1613 (2014). https://doi.org/10.1007/s13213-014-0804-4 and has been increasingly studied for its genomic characteristics, ecological roles, and emerging relevance as a potential opportunistic pathogen.

References

1. Yang J, Long H, Hu Y, Feng Y, McNally A, Zong Z. Klebsiella oxytoca Complex: Update on Taxonomy, Antimicrobial Resistance, and Virulence. Clin Microbiol Rev. 2022 Jan 19;35(1):e0000621. doi: 10.1128/CMR.00006-21.

2. Saha R, Farrance CE, Verghese B, Hong S, Donofrio RS. Klebsiella michiganensis sp. nov., a new bacterium isolated from a tooth brush holder. Curr Microbiol. 2013 Jan;66(1):72-8. doi: 10.1007/s00284-012-0245-x.

3. Saha, R., Saha, N., Atwain, A. et al. Evaluation of disinfection efficacy of ozone and chlorinated disinfectant against the biofilm of Klebsiella michiganensis and Pseudomonas aeruginosa . Ann Microbiol 64, 1607–1613 (2014). https://doi.org/10.1007/s13213-014-0804-4