Legionella pneumophila serogroup six: isolation from cases of legionellosis, identification by immunofluorescence staining, and immunological response to infection

J Clin Microbiol. 1980 Sep;12(3):395-401. doi: 10.1128/jcm.12.3.395-401.1980.


Isolates of Legionella pneumophila that are serologically different from strains of serogroups 1 through 5 were obtained from lung biopsy tissue or pleural fluid from three renal transplant recipients in Chicago, Ill. These strains were placed in a newly designated L. pneumophila serogroup, serogroup 6, on the basis of fluorescent-antibody staining characteristics. An L. pneumophila strain obtained from Bethesda, Md., one from Houston, Tex., and one from Oxford, England, also belong to this new serogroup. L. pneumophila serogroup 6 appears to be widely distributed geographically.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Antibodies, Bacterial / biosynthesis
  • Antigens, Bacterial / immunology
  • Female
  • Fluorescent Antibody Technique
  • Humans
  • Immunoglobulin A / biosynthesis
  • Immunoglobulin G / biosynthesis
  • Immunoglobulin M / biosynthesis
  • Kidney Transplantation
  • Legionella / classification
  • Legionella / immunology
  • Legionella / isolation & purification*
  • Legionnaires' Disease / immunology
  • Legionnaires' Disease / microbiology*
  • Male
  • Middle Aged
  • Transplantation, Homologous


  • Antibodies, Bacterial
  • Antigens, Bacterial
  • Immunoglobulin A
  • Immunoglobulin G
  • Immunoglobulin M