title: Second serogroup of Legionella hackeliae isolated from a patient with pneumonia.
abstract: A Legionella-like organism (strain 798-PA-H, ATCC 35999) isolated from a lung aspirate was shown by DNA hybridization to belong to the species Legionella hackeliae. Growth, gas-liquid chromatographic, and physiologic characteristics were consistent with those of the type strain of L. hackeliae, Lansing 2 (ATCC 35250). However, 798-PA-H was minimally reactive with L. hackeliae direct immunofluorescence assay conjugate or slide agglutination test antiserum. Cross-absorption studies with 798-PA-H and Lansing 2 antisera supported placing 798-PA-H in a second serogroup of L. hackeliae.
mesh_terms: D000372:Agglutination Tests; D004269:DNA, Bacterial / Q000032:analysis; D005260:Female; D006801:Humans; D007875:Legionella / Q000145:classification / Q000302:isolation & purification* / Q000502:physiology; D007877:Legionnaires' Disease / Q000382:microbiology*; D008875:Middle Aged; D009693:Nucleic Acid Hybridization; D011014:Pneumonia / Q000382:microbiology*; D012703:Serotyping
chemical_list: D004269:DNA, Bacterial