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ornithosis
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ornithosis

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Also known as psittacosis, parrot fever

Psittacosis, also known as parrot fever or ornithosis, is a zoonotic infectious disease caused by the bacterium Chlamydia psittaci. Birds are the main reservoir, and human infection usually follows inhalation of aerosolised dried droppings or respiratory secretions from infected birds. Although many human infections are mild, psittacosis can cause pneumonia and occasionally severe complications including endocarditis, hepatitis, and neurologic disease.

Key facts

Medical condition (new).name
Psittacosis
Medical condition (new).field
Infectious medicinePulmonology
Medical condition (new).image
Chlamydophila psittaci FA stain.jpg
Medical condition (new).caption
Direct fluorescent antibody stain of a mouse brain impression smear showing C. psittaci

via Wikipedia infobox

Research

3,296 papers
  • [Ornithosis].Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke · 2025
  • ORNITHOSIS.Journal of the American Medical Association · 1956
  • Ornithosis.Medicine illustrated · 1953
  • [Ornithosis].Schweizerische medizinische Wochenschrift · 1958
  • [Ornithosis].Nederlands tijdschrift voor geneeskunde · 1957

via PubMed

Wikidata facts

Image
Chlamydophila psittaci FA stain.jpg
Show 6 more facts
Commons category
Psittacosis
NCI Thesaurus ID
C34873
minimal incubation period in humans
5
maximal incubation period in humans
19
ICD-9-CM
073.9
Sources (6)

via Wikidata · CC0

~9 min read

Article

17 sections
Contents
  • In humans
  • Transmission and reservoirs
  • Signs and symptoms
  • Diagnosis
  • Treatment
  • Prevention
  • Epidemiology
  • History
  • In birds
  • Signs
  • Diagnosis
  • Epidemiology
  • One Health and public health significance
  • Use as a biological weapon
  • Notable casualties
  • References
  • External links

Psittacosis, also known as parrot fever or ornithosis, is a zoonotic infectious disease caused by the bacterium Chlamydia psittaci. Birds are the main reservoir, and human infection usually follows inhalation of aerosolised dried droppings or respiratory secretions from infected birds. Although many human infections are mild, psittacosis can cause pneumonia and occasionally severe complications including endocarditis, hepatitis, and neurologic disease.

==In humans== == Transmission and reservoirs == C. psittaci commonly infects birds, including psittacine birds such as parrots, parakeets, cockatiels, and budgerigars, but human infection has also been linked to pigeons, turkeys, chickens, ducks, and other birds. Many infected birds have no obvious clinical signs but may shed organisms in feces and respiratory secretions for prolonged periods.

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