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Chlamydia psittaci is a lethal intracellular bacterial species that may cause endemic avian chlamydiosis, epizootic outbreaks in other mammals, and respiratory psittacosis in humans. Potential hosts include feral birds and domesticated poultry, as well as cattle, pigs, sheep, and horses.
Psittacosis—also known as parrot fever, and ornithosis—is a zoonotic infectious disease in humans caused by a bacterium called Chlamydia psittaci and contracted from infected parrots, such as macaws, cockatiels, and budgerigars, and from pigeons, sparrows, ducks, hens, gulls and many other species of birds.
The virus Psittacid alphaherpesvirus 1 is the etiologic agent that causes Pacheco's disease. This virus species is closely related to Gallid alphaherpesvirus 1. [2] It was initially identified as a herpesvirus by examining its virion size, sensitivity to ether, the formation of intranuclear inclusions, its ability to thicken the nuclear membranes of the host cells.
Chlamydia species have genomes around 1.0 to 1.3 megabases in length. [12] Most encode ~900 to 1050 proteins. [13] Some species also contain a DNA plasmids or phage genomes (see Table). The elementary body contains an RNA polymerase responsible for the transcription of the DNA genome after entry into the host cell cytoplasm and the initiation ...
Symptoms worsen upon skin exposure to avian proteins in 85% of patients. [3] Symptoms tend to occur or worsen within 4–8 hours after exposure to avian protein. [3] Symptoms almost always worsen upon lung exposure to avian protein, and such tests are often performed in hospital in case symptoms become hard to manage. [3]
Bird flu is a disease caused by infection with avian influenza A viruses, which spread naturally among wild aquatic birds and circulate in poultry, TODAY.com previously reported. Occasionally ...
More than 81 million U.S. poultry and aquatic birds have been killed by avian flu across 47 states since January 2022, according to the C US is '18 months or so' away from finding bird flu vaccine ...
The 1929–1930 psittacosis pandemic, also known as the psittacosis outbreak of 1929–1930 and the great parrot fever pandemic, [2] was a series of simultaneous outbreaks of psittacosis (parrot fever) which, accelerated by the breeding and transportation of birds in crowded containers for the purpose of trade, was initially seen to have its origin in parrots from South America.