title: Neisseria lactamica septicemia in an immunocompromised patient.
abstract: Neisseria lactamica was isolated from the blood of a 7-year-old girl who was immunosuppressed from chemotherapy for acute lymphocytic leukemia. She was receiving trimethoprim-sulfamethoxazole prophylactically. The isolate was resistant to trimethoprim-sulfamethoxazole and sensitive to penicillin. The patient responded to intravenous penicillin therapy. The organism did not produce immunoglobulin A1 protease.
mesh_terms: D002648:Child; D004338:Drug Combinations / Q000494:pharmacology; D005260:Female; D006801:Humans; D007945:Leukemia, Lymphoid / Q000150:complications; D009343:Neisseria / Q000187:drug effects*; D010403:Penicillin Resistance; D010406:Penicillins / Q000494:pharmacology; D018805:Sepsis / Q000382:microbiology*; D013420:Sulfamethoxazole / Q000494:pharmacology*; D014295:Trimethoprim / Q000494:pharmacology*; D015662:Trimethoprim, Sulfamethoxazole Drug Combination
chemical_list: D004338:Drug Combinations; D010406:Penicillins; D015662:Trimethoprim, Sulfamethoxazole Drug Combination; D014295:Trimethoprim; D013420:Sulfamethoxazole