title: The first case of septicemia due to nontoxigenic Corynebacterium diphtheriae in Poland: case report.
abstract: BACKGROUND
  Toxigenic strains of Corynebacterium diphtheriae are well known agent of diphtheria. Nontoxigenic strains can cause atypical course of the disease. Invasive diseases caused by C. diphtheriae occur very rare.
  
  
  METHODS
  We have described the first case of septicemia and endocarditis due to nontoxigenic C. diphtheriae biotype gravis in Poland. The patient has not belonged to any group of risk such infection.
  
  
  CONCLUSIONS
  The case presented in this article shows unusual case of infection connected with nontoxigenic C. diphtheriae that took place in the area where have been no cases of diphtheria and other C. diphtheriae infections for near ten years. It shows the importance of identifying Corynebacterium isolates at the species level especially when the strain has been isolated from normally sterile sites.
authors.affiliation: Department of Bacteriology, National Institute of Hygiene, 24 Chocimska St., 00-791 Warsaw, Poland. azasada@pzh.gov.pl
authors.forename: Aleksandra Anna
authors.initials: AA
authors.lastname: Zasada
authors.forename: Maria
authors.initials: M
authors.lastname: Zaleska
authors.forename: Regina Beata
authors.initials: RB
authors.lastname: Podlasin
authors.forename: Ilona
authors.initials: I
authors.lastname: Seferynska
mesh_terms: D000328:Adult; D016470:Bacteremia / Q000209:etiology*; D003353:Corynebacterium diphtheriae / Q000187:drug effects / Q000302:isolation & purification*; D004697:Endocarditis, Bacterial / Q000209:etiology*; D006801:Humans; D008297:Male; D008826:Microbial Sensitivity Tests