Chlamydophila psittaci

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Chla·myd·o·phil·a psit·ta·ci

(klă-midō-filă si-tasī)
Organisms that resemble C. trachomatis but do not produce glycogen. Various strains of this species cause psittacosis in humans and ornithosis in birds. Also called Chlamydia psittaci (q.v.).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Chlamydophila psittaci

A species of Chlamydophila common in birds and animals. Pet owners, pet shop employees, poultry workers, and workers in meat-processing plants are frequently exposed to C. psittaci.


After an incubation period of 5 to 15 days, nonspecific symptoms (e.g., malaise, headache, fever) develop; progression to pneumonia is serious and may be fatal. Alternatively, the disease may resemble infectious mononucleosis with fever, pharyngitis, hepatosplenomegaly, and adenopathy. Severity may vary from inapparent to mild to fatal systemic disease.


The fatality rate is approx. 20% in untreated patients.


Treatment consists of tetracycline or doxycycline for 10 to 21 days.

See also: Chlamydophila
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The ELISA test kit for avian C. psittaci (ImmunoComb[c]) used detects immunoglobulin G antibodies (IgG) against C.
Together with the confirmed C. psittaci infection in patient 2, the absence of a common pathogen signature strongly suggests that the cases were unrelated.
Since descriptions of infectious diseases in toucans and aracaris are lacking in veterinary literature, the proposal of this case report is to describe serological findings associated with the detection of C. psittaci in ramphastids and contributes to the understanding of the epidemiology of this disease.
trachomatis HSP60 can actually lead to inflammation and scarring in humans as C. psittaci does in guinea pigs, but Stephens suspects that it could.
The detection of C. psittaci antibodies was also performed to assure that there is no current infection in the hornbills to make the initial reports of hematological and serum biochemical values valid.
In our previous study (6), we tested for only C. psittaci and C.
(2002) demonstraram a evidencia de infeccao por C. psittaci em aves do genero Amazona, utilizando 95 individuos cativos, aparentemente saudaveis, de tres estados brasileiros.
However, this problem may occur more often than reflected by reported cases because 1) persons infected with C. psittaci may be only mildly symptomatic and not seek medical attention; 2) physicians may not elicit a history of bird exposure when evaluating patients because the diagnosis may not be suspected or because patients may not recall transient bird exposure; 3) convalescent-phase serum samples may not be obtained on patients who show clinical improvement on therapy; and 4) prompt initiation of appropriate antibiotic therapy may blunt the antibody response to C.
Since the samples obtained came from Ninoy Aquino Parks and Wildlife Nature Center, which houses a number of avian species, it is imperative that the presence of C. psittaci antibodies are to be determined within the samples.
C. psittaci can infect 465 avian species in 30 avian orders, with at least 153 species in the order Psittaciformes (5).