First Reported Infections Caused by Three Newly Described Genera in the Family Xanthomonadaceae

Abstract

Members of the family of Xanthomonadaceae are typically characterized as environmental organisms. With the exception of Stenotrophomonas maltophilia , these organisms are infrequently implicated as human pathogens. We describe three cases of central venous catheter-associated bloodstream infections caused by Dokdonella koreensis , Aquimonas voraii , and a Luteibacter sp., all newly named genera within the family Xanthomonadaceae . The three patients all had histories of underlying hematological disorders, presented with fever, and recovered fully following treatment. These isolates required 16S rRNA gene sequencing for identification and, unlike S. maltophilia , demonstrated susceptibility to most antibiotics tested. This report represents the first description of human infections caused by these organisms.