Case Report: Case Series of Kocuria palustris Bacteremia among Immunocompromised Patients

Abstract

ABSTRACT. Kocuria species are normal commensals of the skin that have been found in various environmental niches and are usually considered nonpathogenic. However, according to recent literature, Kocuria spp. have been associated with human infections. Kocuria palustris is an emerging opportunistic pathogen with great potential to cause disease in immunocompromised patients. The isolation and identification of this pathogen is necessary, as timely treatment with the appropriate antibiotics can help in reducing mortality among these patients. We present three cases of bacteremia in immunocompromised patients admitted to our hospital; one patient was receiving chemotherapy for gall bladder carcinoma, the second was on maintenance hemodialysis for chronic kidney disease, and the third was receiving chemotherapy for acute myeloid leukemia. All three patients presented with a fever in the setting of neutropenia during the course of treatment with chemotherapy (in Cases 1 and 3) or hemodialysis (in Case 2). The blood culture samples of all the patients had pure isolates of Kocuria species K. palustris, which was identified by matrix assisted laser desorption ionisation- time of flight mass spectrometry (MALDI-ToF MS). All three patients presented with febrile neutropenia during the course of treatment with chemotherapy (in Cases 1 and 3) or hemodialysis (in Case 2).