Johns Hopkins ABX Guide
Chlamydophila psittaci
MICROBIOLOGY
- C.psittaci may appear as Gram-negative, spherical (0.4-0.6 microns in diameter, Fig 1), intracellular bacteria.
- Previously called, Chlamydia psittaci, now termed Chlamydophila psittaci.
- Agent of endemic avian chlamydiosis and epizootic outbreaks in mammals.
- Typical epidemiology: birds excrete infectious organisms in discharge from eyes, beaks, and excrement.
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Last updated: January 12, 2023
Citation
Auwaerter, Paul G. "Chlamydophila Psittaci." Johns Hopkins ABX Guide, The Johns Hopkins University, 2023. Johns Hopkins Guides, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540118/6/Chlamydophila_psittaci.
Auwaerter PG. Chlamydophila psittaci. Johns Hopkins ABX Guide. The Johns Hopkins University; 2023. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540118/6/Chlamydophila_psittaci. Accessed November 3, 2025.
Auwaerter, P. G. (2023). Chlamydophila psittaci. In Johns Hopkins ABX Guide. The Johns Hopkins University. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540118/6/Chlamydophila_psittaci
Auwaerter PG. Chlamydophila Psittaci [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2023. [cited 2025 November 03]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540118/6/Chlamydophila_psittaci.
* Article titles in AMA citation format should be in sentence-case
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