A specific case in which zoonotic infection bacteria were detected in different body parts from blood flow and bite infection

Abstract

Neisseria animaloris is a gram-negative bacterium that is characterized by its ability to ferment saccharose. N. animaloris has a gram-stained image and forms colonies that resemble those of the genus Pasteurella. We encountered an interesting case of sepsis, in which both Pasteurella multocida, which is commonly detected from cat-bite-infected wounds, and N. animaloris, which is rarely detected from blood culture samples, were found. The patient was a woman in her 60s. She was diagnosed as having breast cancer a few years ago and has been treated. However, the disease has progressed and it is in the end-stage. She visited our hospital owing to severe malaise and pain of the left axilla. She kept 10 cats in her house. There was a cat bite wound, redness, and swelling in the back of her right hand. The bacterium from her cat bite wound were identified as P. multocida by MALDI Biotyper. The bacterium from her blood culture were identified as N. animaloris by 16S rRNA genetic analysis. There are only a few case reports on N. animaloris, and its clinical significance is yet to be determined. In this patient, bacteria of different genera were detected from different parts of her body. However, it is well known that N. animaloris belongs to the normal bacterial flora of cats and dogs, and there is no doubt that it is the cause of this sepsis.