Stenotrophomonas maltophilia (formerly Xanthomonas maltophilia) is a non-fermenting gram-negative bacillus, associated with infections such as endocarditis, sepsis, meningitis, peritonitis, and soft tissue and wound infections [11], which is intrinsically resistant to broad-spectrum antibiotics [25], and has an increased potential to induce disease in humans who have malignancies, chronic respirat