Misindentification of Mycobacterium kumamotonense as M. tuberculosis

are a dominant species in the study area and usually parasitize a variety of wild and domestic animals. These ticks often feed on humans as alternative hosts. Because this Roseomonas sp. is not a common pathogen, its role in public health and veterinary medicine is unkown. Phenotypic characterization of the isolates indicated similarities with previously reported Roseomonas spp. Phylogenetic analysis showed that the novel Roseomonas sp. is closely related to R. cervicalis, which was isolated from a cancer patient. Our isolates also differed from 2 reported strains isolated from freshwater lake sediment in Jiangsu Province, China (9) and from soil in Fujian Province, China (10). This result indicated the species diversity of the genus Roseomonas, which might be related to different bacterial origins. Because of the unique biochemical characteristics, antimicrobial drug susceptibilities, and novel isolation source of our isolates, the pathogenesis of this organism should be investigated.