An outbreak of psittacosis due to Chlamydophila psittaci genotype A in a veterinary teaching hospital

J Med Microbiol. 2006 Nov;55(Pt 11):1571-1575. doi: 10.1099/jmm.0.46692-0.

Abstract

An outbreak of psittacosis in a veterinary teaching hospital was recognized in December 2004. Outbreak management was instituted to evaluate the extent of the outbreak and to determine the avian source. Real-time PCR, serologic testing and sequencing of the ompA gene of Chlamydophila psittaci were performed. Sputum samples from patients, throat-swab samples from exposed students and staff, and faecal specimens from parrots and pigeons were tested. In this outbreak, 34 % (10/29) of the tested individuals were infected. The clinical features of the infection ranged from none to sepsis with multi-organ failure requiring intensive-care-unit admission. C. psittaci genotype A was identified as the outbreak strain. Parrots, recently exposed to a group of cockatiels coming from outside the teaching facility, which were used in a practical class, appeared to be the source of the outbreak. One of the tested pigeons harboured an unrelated C. psittaci genotype B strain. The microbiological diagnosis by real-time PCR on clinical specimens allowed for rapid outbreak management; subsequent genotyping of the isolates identified the avian source. Recommendations are made to reduce the incidence and extent of future outbreaks.

MeSH terms

  • Adult
  • Amazona
  • Animals
  • Antibodies, Bacterial / blood
  • Bacterial Outer Membrane Proteins / chemistry
  • Bacterial Outer Membrane Proteins / genetics
  • Base Sequence
  • Bird Diseases / microbiology
  • Chlamydophila psittaci / genetics
  • Chlamydophila psittaci / growth & development*
  • Complement Fixation Tests
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / genetics
  • Disease Outbreaks*
  • Enzyme-Linked Immunosorbent Assay
  • Female
  • Humans
  • Male
  • Middle Aged
  • Molecular Sequence Data
  • Netherlands / epidemiology
  • Polymerase Chain Reaction
  • Psittacosis / epidemiology*
  • Psittacosis / microbiology
  • Zoonoses / epidemiology
  • Zoonoses / microbiology*
  • Zoonoses / transmission

Substances

  • Antibodies, Bacterial
  • Bacterial Outer Membrane Proteins
  • DNA, Bacterial
  • OMPA outer membrane proteins

Associated data

  • GENBANK/DQ230095
  • GENBANK/DQ230096