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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.
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.
All Chlamydiota are anaerobic bacteria with a biphasic developmental lifecycle that depends on obligately intracellular growth in eukaryotic host cells.. Chlamydophila was recognized by a number of scientists in 1999, [3] with six species in Chlamydophila and three in the original genus, Chlamydia.
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 ...
A deadly type of bird flu has been confirmed on the mainland of Antarctica for the first time, scientists said, a potential risk for the southern region's huge penguin colonies. "This discovery ...
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 ...