
f An outbreak of psittacosis due to Chlamydophila psittaci genotype A in a veterinary teaching hospital
- Authors: Edou R. Heddema1,7 , Erik J. van Hannen2 , Birgitta Duim1 , Bartelt M. de Jongh2 , Jan A. Kaan3 , Rob van Kessel4 , Johannes T. Lumeij5 , Caroline E. Visser1 , Christina M. J. E. Vandenbroucke-Grauls1,6
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1 1Department of Medical Microbiology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands 2 2Department of Medical Microbiology and Immunology, St Antonius Hospital, Nieuwegein, The Netherlands 3 3Department of Medical Microbiology and Immunology, Diakonessen Hospital, Utrecht, The Netherlands 4 4Department of Infectious Diseases and Hygiene, Municipal Health Service, Utrecht, The Netherlands 5 5Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Division of Avian and Exotic Animal Medicine, University of Utrecht, Utrecht, The Netherlands 6 6Department of Medical Microbiology and Infection Control, VU University Medical Centre, Amsterdam, The Netherlands
- CorrespondenceEdou R. Heddema [email protected]
- First Published Online: 01 November 2006, Journal of Medical Microbiology 55: 1571-1575, doi: 10.1099/jmm.0.46692-0
- Subject: Clinical Microbiology And Virology
- Received:
- Accepted:
- Cover date:




An outbreak of psittacosis due to Chlamydophila psittaci genotype A in a veterinary teaching hospital, Page 1 of 1
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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.
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The GenBank/EMBL/DDBJ accession numbers for the sequences of the ompA gene of the C. psittaci OSV outbreak strain and the unrelated C. psittaci CLV pigeon isolate are DQ230095 and DQ230096, respectively.
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†Present address: VU University Medical Centre, Department of Medical Microbiology and Infection Control, PO Box 7057, 1007 MB Amsterdam, The Netherlands.
- Keyword(s): rELISA, recombinant ELISA, IC, internal control, CFT, complement fixation test, MIF, microimmunofluorescence
SGM | Published by the Microbiology Society
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