Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to ornithosis: Q fever


a term that has been used in various ways, including: (1) to replace the term psittacosis (originally thought to affect only parrots); (2) to refer to Chlamydia psittaci infection in other birds, with the term psittacosis being reserved for infection in parrots and humans; and (3) to refer to Chlamydia psittaci infection in all birds, with the term psittacosis being reserved for human infection.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


The disease in nonpsittacine birds (domestic fowl, ducks, pigeons, turkeys, and many wild birds) caused by Chamydophila psittaci A zoonoisis. Some apply the term ornithosis to any bird affted by chlamydiosis, though many prefer psitacosis for psittacine birds (for example, parrot, lovebirds, parakeet).
[G. ornis (ornith-), bird, + -osis, condition]
Farlex Partner Medical Dictionary © Farlex 2012


The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


An infectious disease in psittacine birds and humans caused by the bacterium Chlamydia psittaci. Avian infections are mainly inapparent or latent, although acute disease does occur; human infections may result in mild disease with a flulike syndrome or in severe disease, with symptoms of bronchopneumonia.
Synonym(s): ornithosis, Parrot disease (3) , parrot fever.
[G. psittakos, a parrot, + -osis, condition]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Chlamydiosis, psittacosis, or ornithosis

Other names for parrot fever in humans.
Mentioned in: Parrot Fever
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Ornithosis in people typically causes influenza-like symptoms that can lead to severe pneumonia.
In cases of enlargement, such as seen with infectious disease (eg, salmonellosis, ornithosis, tuberculosis) or neoplasia (leucosis), the spleen can be identified readily on both projections.
Ornithosis, a disease characterized by severe pneumonia and influenza-like symptoms, might develop in persons infected with this bacterium.
Abstract: Psittacosis, also known as parrot fever and ornithosis, is a bacterial infection that can cause severe pneumonia and other serious health problems in humans.
B (high risk) * moderately easy to * Brucellosis spread * moderate illness rates * Glanders and low death rates * Ornithosis (Psittacosis) * require specific * Q fever enhancements of * Viral encephalitis laboratory capacity * Toxins and enhanced disease * Food safety zoonotic monitoring.
A common-source outbreak of ornithosis in veterinary surgeons.