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The Chlamydiaceae are a family of gram-negative bacteria that belongs to the phylum Chlamydiota, order Chlamydiales. Chlamydiaceae species express the family-specific lipopolysaccharide epitope αKdo-(2→8)-αKdo-(2→4)-αKdo (previously called the genus-specific epitope). Chlamydiaceae ribosomal RNA genes all have at least 90% DNA sequence ...
Currently, the order Chlamydiales includes the families Chlamydiaceae, Simkaniaceae, and Waddliaceae, which have Gram-negative extracellular infectious bodies (EBs), and Parachlamydiaceae, which has variable Gram staining of EBs. The family Rhabdochlamydiaceae has been proposed.
In 2009 the validity of Chlamydophila was challenged by newer DNA analysis techniques, leading to a proposal to "reunite the Chlamydiaceae into a single genus, Chlamydia". [8] This appears to have been accepted by the community, [9] [10] bringing the number of (valid) Chlamydia species up to 9. Many probable species were subsequently isolated ...
The Chlamydiales order as recently described contains the families Chlamydiaceae, and the Clavichlamydiaceae, while the new Parachlamydiales order harbors the remaining seven families. [17] This proposal is supported by the observation of two distinct phylogenetic clades that warrant taxonomic ranks above the family level.
This view was challenged three years later by newer whole genome analysis techniques leading to a proposal to "reunite the Chlamydiaceae into a single genus, Chlamydia". [7] 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 ...
Chlamydia trachomatis (/ k l ə ˈ m ɪ d i ə t r ə ˈ k oʊ m ə t ɪ s /) is a Gram-negative, anaerobic bacterium responsible for chlamydia and trachoma. C. trachomatis exists in two forms, an extracellular infectious elementary body (EB) and an intracellular non-infectious reticulate body (RB). [2]
Chlamydia pecorum, also known as Chlamydophila pecorum [2] [3] is a species of Chlamydiaceae that originated from ruminants, such as cattle, sheep and goats. [4] It has also infected koalas and swine. [5] C. pecorum strains are serologically and pathogenically diverse. [6]
Chlamydia, or more specifically a chlamydia infection, is a sexually transmitted infection caused by the bacterium Chlamydia trachomatis. [3] Most people who are infected have no symptoms. [1]
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