A CASE OF NECROPSOBACTER ROSORUM BACTERAEMIA

Abstract

Necropsobacter rosorum is a gram-negative organism previously classified under the family Pasteurellaceae. It has been isolated from the gastrointestinal and respiratory tracts of mammals. However, there is very little information available about how N. rosorum infects humans. Due to a paucity of information in the database, commercial identification methods such as the VITEK identification system or the Analytical Profile Index (API) frequently misidentify this organism. Thus, it is a challenge for laboratories to accurately identify N. rosorum. By using matrixassisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF), we were able to identify N. rosorum in a patient with sepsis secondary to wet gangrene of the left big toe. This case report aims to shed light on the application of advance diagnostic tests for the early and accurate detection of rare human pathogens. It also contributes to a better understanding of the diseases associated with this bacterium.