Ochrobactrum

Background

• Genus of Gram-negative bacilli
• Indole-negative, catalase-positive
• Includes Ochrobactrum anthropi (most common cause of infection in humans) as well as numerous other species
• Somewhat related to Brucella

Management

• Often harbour a chromosomal class C ESBL, giving resistance to penicillins and cephalosporins
• Empirically should treat with carbapenems, fluoroquinolones, co-trimoxazole, or aminoglycosides

Further Reading

• The Genus Ochrobactrum as Major Opportunistic Pathogens. Microorganisms. 2020 Nov 16;8(11):1797. doi: 10.3390/microorganisms8111797. PMID: 33207839; PMCID: PMC7696743.