Article 

Avian Chlamydiosis

Psittacosis or ornithosis is caused by Chlamydophila psittaci, an obligate intracellular bacterial infection of birds. Chlamydophila psittaci may be excreted in feces and oculonasal discharge. Chlamydophila is environmentally labile but remains infectious for months in organic debris. Latently infected birds appear healthy but shed the organism intermittently for months to years. Stressors such as breeding, shipping, crowding, or climatic extremes may activate shedding.

Article 

Zoonotic Avian Infections

An average 250 human cases of Chlamydophila psittaci are reported annually in the United States. Clinical signs typically follows a 5 to 14 day incubation period. Disease ranges from subclinical to systemic illness with severe pneumonia. Most people demonstrate sudden onset fever, headache, malaise, and myalgia with a non-productive cough that can be accompanied by breathing difficulty and chest tightness. Splenomegaly and…

Client Education Handout 

Psittacosis in Birds & Humans

Psittacosis is an infectious disease of birds and people caused by Chlamydia psittaci, formerly known as Chlamydophila psittaci.  This client education handout discusses types of birds commonly associated with human psittacosis, persons at risk as well as details of psittacosis in humans as birds and measures to prevent disease.