Leclercia adecarboxylata in a Patient With Newly Diagnosed Chronic Lymphocytic Leukemia

Area of Science:

• Medical Microbiology
• Infectious Diseases

Background:

• Leclercia adecarboxylata is a Gram-negative bacillus.
• It is frequently misidentified as Escherichia coli.
• This opportunistic pathogen resides in aquatic environments.

Observation:

• Immunocompromised individuals are commonly affected.
• A case of a 53-year-old immunocompromised male patient is presented.
• The patient was managed for Leclercia adecarboxylata bacteremia.

Findings:

• Leclercia adecarboxylata presents as a nonfatal infection with low virulence.
• The bacterium shows susceptibility to numerous common antibiotics.
• Accurate identification is crucial to avoid misdiagnosis as E. coli.

Implications:

• Early and accurate diagnosis of L. adecarboxylata is essential for appropriate treatment.
• Understanding its opportunistic nature aids in managing infections in immunocompromised hosts.
• This case highlights the importance of considering L. adecarboxylata in the differential diagnosis of Gram-negative bacteremia.