Chlamydia psittaci

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Chla·myd·i·a psit·ta·ci

bacterial organisms that resemble Chlamydia trachomatis, but that form loosely bound intracytoplasmic microcolonies up to 12 mcm in diameter, do not produce glycogen in sufficient quantity to be detected by iodine stains, and are not susceptible to sulfadiazine. Various strains of this species cause psittacosis in humans and ornithosis in nonpsittacine birds; pneumonitis in cattle, sheep, swine, cats, goats, and horses; enzootic abortion of ewes; bovine sporadic encephalomyelitis; enteritis of calves; epizootic chlamydiosis of muskrats and hares; encephalitis of opossum; and conjunctivitis of cattle, sheep, and guinea pigs.

Chlamydia psittaci

The agent that causes psittacosis, see there.

Chlamydia psittaci

An organism related to bacteria that infects some types of birds and can be transmitted to humans to cause parrot fever.
Mentioned in: Parrot Fever


a genus of bacteria in the family Chlamydiaceae previously comprising three species: C. trachomatis, C. pneumoniae and C. psittaci. Following reclassification in 1999, C. psittaci, C. pecorum and C. pneumoniae are now in the genus Chlamydophylia. C. trachomatis remains in the genus Chlamydia, but the mouse and swine strains previously included are now classified in two new species.

Chlamydia muridarum
associated with respiratory tract infections in mice and hamsters. Previously classified as C. psittaci.
Chlamydia psittaci
see C. muridarum, C. suis, Chlamydophila abortus, C. caviae, C. felis, C. pneumoniae, C. pecorum, and C. psittaci.
Chlamydia suis
associated with enteritis, pneumonia and conjunctivitis in pigs. Previously classified as C. psittaci.
References in periodicals archive ?
Frequency of development and associated physiological cost of azithromycin resistance in Chlamydia psittaci 6BC and C.
Study of Acceptance, Pharmacokinetics, and Adverse Reactions of Enrofloxacin in Psittacines, as well as Efficacy After an Experimental Infection with Chlamydia psittaci [master's thesis].
Detection of Chlamydia psittaci DNA in avian clinical samples by polymerase chain reaction.
Polymerase chain reaction for the detection of Chlamydia psittaci in the feces of budgerigars.
Evaluation of the polymerase chain reaction in comparison with other diagnostic methods for the detection of Chlamydia psittaci.
Chlamydia psittaci infections in birds: a review on the pathogenesis and histopathological features.
Newcastle disease virus and Chlamydia psittaci in free-living raptors from eastern Germany.
PCR detection of Chlamydia psittaci in faccal samples from passerine birds in Sweden.
Acute placentitis and spontaneous abortion caused by Chlamydia psittaci of sheep origin: a histological and ultrastructural study.
Restriction endonuclease analysis of DNA from two isolates of Chlamydia psittaci obtained from human abortions.
Isolation of Chlamydia psittaci from naturally infected African clawed frogs (Xenopus laevis).