Update on novel validly published and included bacterial taxa derived from human clinical specimens and taxonomic revisions published in 2023.

Taxonomy is a systematic practice in which microorganisms are granted names to facilitate and standardize multi-disciplinary communication. We summarize novel bacterial taxa derived from human clinical material that were published in peer-reviewed literature and/or included by the during calendar year 2023, as well as taxonomic revisions that have been published/included by the same entity. While the majority of newly discovered facultative and anaerobic organisms were derived from microbiome surveillance, noteworthy novel taxa in the realm of pathogenicity potential include those related to spp., several spp., gen. nov., sp. nov., and sp. nov. With respect to nomenclature revision, the and genera continue to be visited annually. Creation of novel anaerobic Gram-negative bacillus genera , , , , and impacted several spp. and spp. Additional studies are necessary to ascertain the clinical significance of several of these microbes.