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Chlamydia psittaci in birds is often systemic, and infections can be inapparent, severe, acute, or chronic with intermittent shedding. [2] [3] [4] C. psittaci strains in birds infect mucosal epithelial cells and macrophages of the respiratory tract.
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.
Chlamydia is a genus of pathogenic Gram-negative bacteria that are obligate intracellular parasites. Chlamydia infections are the most common bacterial sexually transmitted diseases in humans and are the leading cause of infectious blindness worldwide.
By the 2010s this reclassification "was not wholly accepted or adopted" [8] among microbiologists, which "resulted in a reversion to the single, original genus Chlamydia, which now encompasses all 9 species including Chlamydia psittaci." [8] As of 2013, Chlamydophila was still mentioned in some databases, but controversial. [9]
"Bird flu rarely infects humans, but health officials worry because influenza A viruses that infect birds can change, called mutate, to infect humans and spread from person to person more often ...
A large number of other non-psittacine birds are likely susceptible to sporadic spill-over infection, [15] and there is unpublished evidence of BFDV-associated feather disease in the laughing kookaburra (Daceolo novaeguineae), columbids, corvids and raptors including the wedge-tailed eagle (Aquila audax), white-breasted sea eagle (Haliaetus ...
A US farmworker who caught bird flu after working with dairy cattle in Texas appears to be the first known case of mammal-to-human transmission of the virus, a new study shows.
Last month, the Centers for Disease Control and Prevention confirmed the patient was experiencing the first case of severe bird flu in the U.S. PHOTO: An H5N1 avian influenza virus molecule.